powerpc: use generic atomic implementation for local_t

powerpc implements local_t with atomic operations. There is already
an asm-generic implementation which does this using atomic_t.

Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Madhavan Srinivasan 2017-12-20 09:25:56 +05:30 • committed by Michael Ellerman
commit 3b7e302086