x86: simplify ljmp to 32-bit code

You can directly specify the label as the operand for ljmp.

This commit saves 4-byte code.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
[bmeng: fixed the gas warning]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
32 jobs for master in 137 minutes and 1 second (queued for 8 minutes and 51 seconds)
Status Job ID Name Coverage
  Testsuites
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Build envtools

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Build tools-only

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Check for configs without MAINTAINERS entry

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Run binman, buildman, dtoc and patman testsuites

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cppcheck

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grep TODO/FIXME/HACK

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sloccount

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  Test.Py
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evb-ast2500 test.py

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integratorcp_cm926ejs test.py

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qemu-ppce500 test.py

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qemu-riscv64 test.py

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qemu-x86 test.py

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qemu-x86_64 test.py

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qemu_arm test.py

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qemu_arm64 test.py

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qemu_mips test.py

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qemu_mips64 test.py

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qemu_mips64el test.py

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qemu_mipsel test.py

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sandbox test.py

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sandbox with clang test.py

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sandbox_flattree test.py

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sandbox_spl test.py

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vexpress_ca15_tc2 test.py

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vexpress_ca9x4 test.py

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xilinx_versal_virt test.py

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xtfpga test.py

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zynq_zc702 test.py

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  World Build
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build all 32bit ARM platforms

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build all 64bit ARM platforms

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build all PowerPC platforms

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build all other platforms

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