BeagleBoard: fixed typo in typecast

Without this patch, you should get a warning.

Signed-off-by: Jason Kridner <jkridner@beagleboard.org>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>

board/ti/beagle/beagle.c

@@ -171,7 +171,7 @@ int misc_init_r(void)
 {
 	struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE;
 	struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE;
-	struct control_prog_io *prog_io_base = (struct gpio *)OMAP34XX_CTRL_BASE;
+	struct control_prog_io *prog_io_base = (struct control_prog_io *)OMAP34XX_CTRL_BASE;
 
 	/* Enable i2c2 pullup resisters */
 	writel(~(PRG_I2C2_PULLUPRESX), &prog_io_base->io1);