powerpc: Ignore generated vmlinux.lds in git
powerpc: Ignore generated vmlinux.lds in git

Add a .gitignore in arch/powerpc/kernel to ignore the generated
vmlinux.lds.

Signed-off-by: Sebastien Dugue <c4872dd4597a1b8246480216978bff758a245510@bull.net>
Signed-off-by: Benjamin Herrenschmidt <a7089bb6e7e92505d88aaff006cbdd60cc9120b6@kernel.crashing.org>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas