clk: aspeed: Add AST2600 clock support

This patch adds the clock control driver
for the AST2600 SoC.

Signed-off-by: Ryan Chen <ryan_chen@aspeedtech.com>
Signed-off-by: Chia-Wei, Wang <chiawei_wang@aspeedtech.com>
diff --git a/drivers/clk/aspeed/Makefile b/drivers/clk/aspeed/Makefile
index 81764b4..84776e5 100644
--- a/drivers/clk/aspeed/Makefile
+++ b/drivers/clk/aspeed/Makefile
@@ -4,3 +4,4 @@
 #
 
 obj-$(CONFIG_ASPEED_AST2500) += clk_ast2500.o
+obj-$(CONFIG_ASPEED_AST2600) += clk_ast2600.o