powerpc/kernel: Cleanup on rtas_pci.c
powerpc/kernel: Cleanup on rtas_pci.c

It's minor cleanup so that the function names comply with the
coding style.

Signed-off-by: Gavin Shan <4d6e32db2683aba4a3f3669c68ac02b37d1b91cd@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <17b9e1c64588c7fa6419b4d29dc1f4426279ba01@ellerman.id.au>

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