omap: Fix omap-keypad by restoring old keypad.h without breaking omap2 boards that use matrix_keypad

Only mach-omap2 boards are currently using matrix_keypad. Allow
mach-omap1 boards to use the old style keypad.h without breaking.

Created against linux-2.6.32-rc5.
Compile tested with omap_3430sdp_defconfig and rx51_defconfig.

Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/mach-omap2/board-rx51-peripherals.c b/arch/arm/mach-omap2/board-rx51-peripherals.c
index 2b0eb1b..e34d96a 100644
--- a/arch/arm/mach-omap2/board-rx51-peripherals.c
+++ b/arch/arm/mach-omap2/board-rx51-peripherals.c
@@ -12,6 +12,7 @@
 #include <linux/init.h>
 #include <linux/platform_device.h>
 #include <linux/input.h>
+#include <linux/input/matrix_keypad.h>
 #include <linux/spi/spi.h>
 #include <linux/i2c.h>
 #include <linux/i2c/twl4030.h>
@@ -27,7 +28,6 @@
 #include <mach/common.h>
 #include <mach/dma.h>
 #include <mach/gpmc.h>
-#include <mach/keypad.h>
 #include <mach/onenand.h>
 #include <mach/gpmc-smc91x.h>