ARM: keystone2: Remove unsed external clocks

Remove unused external clocks and make a common definition
for all keystone platforms.

Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
diff --git a/board/ti/ks2_evm/board_k2e.c b/board/ti/ks2_evm/board_k2e.c
index e33cc64..dc00cf6 100644
--- a/board/ti/ks2_evm/board_k2e.c
+++ b/board/ti/ks2_evm/board_k2e.c
@@ -18,12 +18,7 @@
 	[sys_clk]	= 100000000,
 	[alt_core_clk]	= 100000000,
 	[pa_clk]	= 100000000,
-	[ddr3_clk]	= 100000000,
-	[mcm_clk]	= 312500000,
-	[pcie_clk]	= 100000000,
-	[sgmii_clk]	= 156250000,
-	[xgmii_clk]	= 156250000,
-	[usb_clk]	= 100000000,
+	[ddr3a_clk]	= 100000000,
 };
 
 static struct pll_init_data core_pll_config[NUM_SPDS] = {
diff --git a/board/ti/ks2_evm/board_k2hk.c b/board/ti/ks2_evm/board_k2hk.c
index b9e2b07..6e681d7 100644
--- a/board/ti/ks2_evm/board_k2hk.c
+++ b/board/ti/ks2_evm/board_k2hk.c
@@ -21,12 +21,6 @@
 	[tetris_clk]	=	125000000,
 	[ddr3a_clk]	=	100000000,
 	[ddr3b_clk]	=	100000000,
-	[mcm_clk]	=	312500000,
-	[pcie_clk]	=	100000000,
-	[sgmii_srio_clk] =	156250000,
-	[xgmii_clk]	=	156250000,
-	[usb_clk]	=	100000000,
-	[rp1_clk]	=	123456789
 };
 
 static struct pll_init_data core_pll_config[NUM_SPDS] = {
diff --git a/board/ti/ks2_evm/board_k2l.c b/board/ti/ks2_evm/board_k2l.c
index 58a6cbd..70e25f1 100644
--- a/board/ti/ks2_evm/board_k2l.c
+++ b/board/ti/ks2_evm/board_k2l.c
@@ -19,10 +19,7 @@
 	[alt_core_clk]	= 100000000,
 	[pa_clk]	= 122880000,
 	[tetris_clk]	= 122880000,
-	[ddr3_clk]	= 100000000,
-	[pcie_clk]	= 100000000,
-	[sgmii_clk]	= 156250000,
-	[usb_clk]	= 100000000,
+	[ddr3a_clk]	= 100000000,
 };
 
 static struct pll_init_data core_pll_config[NUM_SPDS] = {