ARM: at91: select ATMEL_SDRAMC when using OF

When using device tree, select the Atmel RAM controller driver to handle its
clocks.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>

arch/arm/mach-at91/Kconfig

@@ -49,6 +49,8 @@ config SOC_AT91SAM9
 	select GENERIC_CLOCKEVENTS
 	select MULTI_IRQ_HANDLER
 	select SPARSE_IRQ
+	select MEMORY if USE_OF
+	select ATMEL_SDRAMC if USE_OF
 
 config SOC_SAMA5
 	bool
@@ -58,6 +60,8 @@ config SOC_SAMA5
 	select MULTI_IRQ_HANDLER
 	select SPARSE_IRQ
 	select USE_OF
+	select MEMORY
+	select ATMEL_SDRAMC
 
 menu "Atmel AT91 System-on-Chip"