cmd: disable CMD_NVEDIT_EFI by default

The growth of the UEFI sub-system leads to build failures for systems with
strict limits on the U-Boot image size.

CMD_NVEDIT_EFI supports displaying and editing of UEFI variables. The
setting is not needed for booting. Disabling it by default reduces the
size of the U-Boot image by 2 KiB.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
31 jobs for efi-2019-10 in 125 minutes and 6 seconds (queued for 4 seconds)
Status Job ID Name Coverage
  Testsuites
passed #16643
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Build envtools

00:00:25

passed #16642
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Build tools-only

00:00:26

passed #16641
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Check for configs without MAINTAINERS entry

00:00:23

passed #16644
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Run binman, buildman, dtoc and patman testsuites

00:01:04

passed #16638
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cppcheck

00:06:14

passed #16639
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grep TODO/FIXME/HACK

00:00:24

passed #16640
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sloccount

00:00:44

 
  Test.Py
passed #16647
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evb-ast2500 test.py

00:00:50

passed #16651
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integratorcp_cm926ejs test.py

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passed #16658
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qemu-ppce500 test.py

00:00:44

passed #16659
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qemu-riscv64 test.py

00:01:04

passed #16660
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qemu-x86 test.py

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passed #16661
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qemu-x86_64 test.py

00:01:21

passed #16652
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qemu_arm test.py

00:01:15

passed #16653
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qemu_arm64 test.py

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passed #16654
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qemu_mips test.py

00:00:45

passed #16656
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qemu_mips64 test.py

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passed #16657
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qemu_mips64el test.py

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passed #16655
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qemu_mipsel test.py

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passed #16645
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sandbox test.py

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passed #16648
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sandbox_flattree test.py

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passed #16646
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sandbox_spl test.py

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passed #16649
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vexpress_ca15_tc2 test.py

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passed #16650
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vexpress_ca9x4 test.py

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passed #16663
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xilinx_versal_virt test.py

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passed #16664
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xtfpga test.py

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passed #16662
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zynq_zc702 test.py

00:00:50

 
  World Build
passed #16665
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build all 32bit ARM plaforms

00:48:58

passed #16666
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build all 64bit ARM plaforms

00:17:46

passed #16667
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build all PowerPC plaforms

00:19:32

passed #16668
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build all other plaforms

00:09:30