ARM: mx25: dynamically allocate imx-keypad devices

The mxc-keypad device seems to be the result of an early and partial
merge of the keypad driver.  It's unused and there is no corresponding
driver available, so just remove it.

Cc: Alberto Panizzo <maramaopercheseimorto@gmail.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
diff --git a/arch/arm/mach-mx25/devices-imx25.h b/arch/arm/mach-mx25/devices-imx25.h
index 448939a..a35123f 100644
--- a/arch/arm/mach-mx25/devices-imx25.h
+++ b/arch/arm/mach-mx25/devices-imx25.h
@@ -30,6 +30,10 @@
 #define imx25_add_imx_i2c1(pdata)	imx25_add_imx_i2c(1, pdata)
 #define imx25_add_imx_i2c2(pdata)	imx25_add_imx_i2c(2, pdata)
 
+extern const struct imx_imx_keypad_data imx25_imx_keypad_data __initconst;
+#define imx25_add_imx_keypad(pdata)	\
+	imx_add_imx_keypad(&imx25_imx_keypad_data, pdata)
+
 extern const struct imx_imx_ssi_data imx25_imx_ssi_data[] __initconst;
 #define imx25_add_imx_ssi(id, pdata)	\
 	imx_add_imx_ssi(&imx25_imx_ssi_data[id], pdata)