On power8 the SIPR and SIHV are not in MMCRA, so convert the routines
to take regs and change the names accordingly.
Signed-off-by: NMichael Ellerman <michael@ellerman.id.au>
Acked-by: NPaul Mackerras <paulus@samba.org>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>