powerpc/mm: Avoid double irq save/restore in activate_mm

It calls switch_mm() which already does the irq save/restore
these days.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Benjamin Herrenschmidt 2017-07-24 14:27:59 +10:00 • committed by Michael Ellerman
commit 058ccc3465