clk: imx: rename clk-imx51-imx53.c to clk-imx5.c

As the driver is handling all i.MX5 series SoCs inlcuding i.MX50, rather
than just i.MX51 and i.MX53, let's rename it to clk-imx5.c.
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/imx/Makefile

@@ -35,7 +35,7 @@ obj-$(CONFIG_SOC_IMX25)  += clk-imx25.o
 obj-$(CONFIG_SOC_IMX27)  += clk-imx27.o
 obj-$(CONFIG_SOC_IMX31)  += clk-imx31.o
 obj-$(CONFIG_SOC_IMX35)  += clk-imx35.o
-obj-$(CONFIG_SOC_IMX5)   += clk-imx51-imx53.o
+obj-$(CONFIG_SOC_IMX5)   += clk-imx5.o
 obj-$(CONFIG_SOC_IMX6Q)  += clk-imx6q.o
 obj-$(CONFIG_SOC_IMX6SL) += clk-imx6sl.o
 obj-$(CONFIG_SOC_IMX6SLL) += clk-imx6sll.o