clk: at91: clk-main: add driver compatible with ccf

Add clk-main driver compatible with common clock framework.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
diff --git a/drivers/clk/at91/Makefile b/drivers/clk/at91/Makefile
index 7083ce2..805f676 100644
--- a/drivers/clk/at91/Makefile
+++ b/drivers/clk/at91/Makefile
@@ -3,7 +3,7 @@
 #
 
 ifdef CONFIG_CLK_CCF
-obj-y += pmc.o sckc.o
+obj-y += pmc.o sckc.o clk-main.o
 else
 obj-y += compat.o
 endif