ARM: realview: add generic config options

This adds a few features that are available on some
or all of the RealView but never made it into the SMP
defconfig file:

- Full tickless idle
- High resolution timers
- Perf events and HW perf events from the PMU
- MTD AFS partition handling
- MTD ROM partition handling
- USB and ISP1760 USB driver
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/configs/realview-smp_defconfig

 # CONFIG_SWAP is not set
 CONFIG_SYSVIPC=y
+CONFIG_NO_HZ_FULL=y
+CONFIG_NO_HZ=y
+CONFIG_HIGH_RES_TIMERS=y
 CONFIG_LOG_BUF_SHIFT=14
+CONFIG_PERF_EVENTS=y
 CONFIG_SLAB=y
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
@@ -28,10 +32,12 @@ CONFIG_IP_PNP_BOOTP=y
 CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
 CONFIG_MTD=y
 CONFIG_MTD_CMDLINE_PARTS=y
+CONFIG_MTD_AFS_PARTS=y
 CONFIG_MTD_BLOCK=y
 CONFIG_MTD_CFI=y
 CONFIG_MTD_CFI_INTELEXT=y
 CONFIG_MTD_CFI_AMDSTD=y
+CONFIG_MTD_ROM=y
 CONFIG_MTD_PHYSMAP=y
 CONFIG_ARM_CHARLCD=y
 CONFIG_NETDEVICES=y
@@ -61,7 +67,8 @@ CONFIG_SND_MIXER_OSS=y
 CONFIG_SND_PCM_OSS=y
 # CONFIG_SND_DRIVERS is not set
 CONFIG_SND_ARMAACI=y
-# CONFIG_USB_SUPPORT is not set
+CONFIG_USB=y
+CONFIG_USB_ISP1760=y
 CONFIG_MMC=y
 CONFIG_MMC_ARMMMCI=y
 CONFIG_NEW_LEDS=y