Adding this to the nfs to match the ext3 kernelcmdline, this re-enables
keyboard input on the qemuppc.

[YOCTO #2058]

Thanks to Yi Zhao <yi.zhao@windriver.com> for the initial patch suggestion

(From OE-Core rev: 1a82989345fb98becb487d270fd93a5e6dffeb47)

Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>