dm: Move OMAP GPIO driver to drivers/gpio/

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Cc: U-Boot DM <u-boot-dm@lists.denx.de>
Cc: Tom Rini <trini@ti.com>
Acked-by: Tom Rini <trini@ti.com>
Signed-off-by: Tom Rini <trini@ti.com>
diff --git a/include/configs/omap3_overo.h b/include/configs/omap3_overo.h
index 15f67fc..92bd8fc 100644
--- a/include/configs/omap3_overo.h
+++ b/include/configs/omap3_overo.h
@@ -25,6 +25,7 @@
 #define CONFIG_OMAP				/* in a TI OMAP core */
 #define CONFIG_OMAP34XX				/* which is a 34XX */
 #define CONFIG_OMAP3_OVERO			/* working with overo */
+#define CONFIG_OMAP_GPIO
 
 #define CONFIG_SDRC				/* The chip has SDRC controller */