ARM: socfpga_defconfig: Enable CONFIG_MTD_ALTERA_SYSMGR

Add System Manager driver by default for SOCFPGA ARM32 platforms.
Signed-off-by: NThor Thayer <thor.thayer@linux.intel.com>
Reviewed-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

arch/arm/configs/socfpga_defconfig

@@ -106,6 +106,7 @@ CONFIG_SENSORS_LTC2978_REGULATOR=y
 CONFIG_WATCHDOG=y
 CONFIG_DW_WATCHDOG=y
 CONFIG_MFD_ALTERA_A10SR=y
+CONFIG_MFD_ALTERA_SYSMGR=y
 CONFIG_MFD_STMPE=y
 CONFIG_REGULATOR=y
 CONFIG_REGULATOR_FIXED_VOLTAGE=y