powerpc: Initialise PMU related regs on Power8

For both HV and guest kernels, intialise PMU regs to something sane.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2 files changed