ARM: imx: rename IMX6SL_CLK_CLK_END to IMX6SL_CLK_END

The macro name IMX6SL_CLK_CLK_END is a little insane.  Rename it to
IMX6SL_CLK_END.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
diff --git a/arch/arm/mach-imx/clk-imx6sl.c b/arch/arm/mach-imx/clk-imx6sl.c
index c0c4ef5..a747a7d 100644
--- a/arch/arm/mach-imx/clk-imx6sl.c
+++ b/arch/arm/mach-imx/clk-imx6sl.c
@@ -63,7 +63,7 @@
 	{ }
 };
 
-static struct clk *clks[IMX6SL_CLK_CLK_END];
+static struct clk *clks[IMX6SL_CLK_END];
 static struct clk_onecell_data clk_data;
 
 static void __init imx6sl_clocks_init(struct device_node *ccm_node)