ARM: keystone: Enable I2C and SPI bus support

Keystone I2C dnd SPI driver updates are already merged so lets
enable them in config.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>

arch/arm/configs/keystone_defconfig

@@ -123,7 +123,9 @@ CONFIG_SERIAL_OF_PLATFORM=y
 CONFIG_I2C=y
 # CONFIG_I2C_COMPAT is not set
 CONFIG_I2C_CHARDEV=y
+CONFIG_I2C_DAVINCI=y
 CONFIG_SPI=y
+CONFIG_SPI_DAVINCI=y
 CONFIG_SPI_SPIDEV=y
 # CONFIG_HWMON is not set
 CONFIG_WATCHDOG=y