ARM: clk-imx31: Fix the keypad clock name

Fix the keypad clock name, in order to fix the following error:

imx-keypad imx-keypad: failed to get keypad clock
imx-keypad: probe of imx-keypad failed with error -2
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Cc: stable@vger.kernel.org

arch/arm/mach-imx/clk-imx31.c

@@ -130,7 +130,7 @@ int __init mx31_clocks_init(unsigned long fref)
 	clk_register_clkdev(clk[nfc], NULL, "mxc_nand.0");
 	clk_register_clkdev(clk[ipu_gate], NULL, "ipu-core");
 	clk_register_clkdev(clk[ipu_gate], NULL, "mx3_sdc_fb");
-	clk_register_clkdev(clk[kpp_gate], "kpp", NULL);
+	clk_register_clkdev(clk[kpp_gate], NULL, "imx-keypad");
 	clk_register_clkdev(clk[usb_div_post], "per", "mxc-ehci.0");
 	clk_register_clkdev(clk[usb_gate], "ahb", "mxc-ehci.0");
 	clk_register_clkdev(clk[ipg], "ipg", "mxc-ehci.0");