[PATCH] powerpc: Add some missing .gitignore's

ignore generated files under arch/powerpc

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/boot/.gitignore

+addnote
+infblock.c
+infblock.h
+infcodes.c
+infcodes.h
+inffast.c
+inffast.h
+inflate.c
+inftrees.c
+inftrees.h
+infutil.c
+infutil.h
+kernel-vmlinux.strip.c
+kernel-vmlinux.strip.gz
+uImage
+zImage
+zImage.vmode
+zconf.h
+zlib.h
+zutil.h

arch/powerpc/kernel/vdso32/.gitignore

+vdso32.lds

arch/powerpc/kernel/vdso64/.gitignore

+vdso64.lds