powerpc/configs/64s: Enable IO_STRICT_DEVMEM

Distros enable it.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230414132415.821564-22-mpe@ellerman.id.au

arch/powerpc/configs/ppc64_defconfig

@@ -416,6 +416,7 @@ CONFIG_STACK_TRACER=y
 CONFIG_SCHED_TRACER=y
 CONFIG_FTRACE_SYSCALLS=y
 CONFIG_BLK_DEV_IO_TRACE=y
+CONFIG_IO_STRICT_DEVMEM=y
 CONFIG_PPC_EMULATED_STATS=y
 CONFIG_CODE_PATCHING_SELFTEST=y
 CONFIG_FTR_FIXUP_SELFTEST=y