ARM: at91: switch sam9rl to common clock framework

Signed-off-by: NAlexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: NBoris BREZILLON <b.brezillon.dev@gmail.com>
Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>

arch/arm/mach-at91/Kconfig

@@ -137,7 +137,6 @@ config SOC_AT91SAM9RL
 	select HAVE_AT91_DBGU0
 	select HAVE_FB_ATMEL
 	select SOC_AT91SAM9
-	select AT91_USE_OLD_CLK
 	select HAVE_AT91_UTMI
 
 config SOC_AT91SAM9G45