powerpc: import a gfp_t fix to arch/powerpc/mm/pgtable_32.c
powerpc: import a gfp_t fix to arch/powerpc/mm/pgtable_32.c

This applies the same fix as Al Viro recently made to
arch/ppc/mm/pgtable.c.

Signed-off-by: Paul Mackerras <19a0ba370c443ba08d20b5061586430ab449ee8c@samba.org>

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