[POWERPC] Enable NO_HZ and high res timers for pseries and ppc64 configs

Enable NO_HZ and high res timers for the ppc64 and pseries defconfigs.
Signed-off-by: NAnton Blanchard <anton@samba.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

arch/powerpc/configs/ppc64_defconfig

@@ -217,6 +217,10 @@ CONFIG_AXON_RAM=m
 #
 # Kernel options
 #
+CONFIG_TICK_ONESHOT=y
+CONFIG_NO_HZ=y
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
 # CONFIG_HZ_100 is not set
 CONFIG_HZ_250=y
 # CONFIG_HZ_300 is not set

arch/powerpc/configs/pseries_defconfig

@@ -177,6 +177,10 @@ CONFIG_IBMEBUS=y
 #
 # Kernel options
 #
+CONFIG_TICK_ONESHOT=y
+CONFIG_NO_HZ=y
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
 # CONFIG_HZ_100 is not set
 CONFIG_HZ_250=y
 # CONFIG_HZ_300 is not set