zynqmp: Enable SDHCI0 options

Enable SDHCI0 for zynqmp.
Add empty gpio.h because of sdhci requirement.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/arch/arm/include/asm/arch-zynqmp/gpio.h b/arch/arm/include/asm/arch-zynqmp/gpio.h
new file mode 100644
index 0000000..098bbde
--- /dev/null
+++ b/arch/arm/include/asm/arch-zynqmp/gpio.h
@@ -0,0 +1,12 @@
+/*
+ * Copyright 2015 Xilinx, Inc.
+ *
+ * SPDX-License-Identifier:      GPL-2.0+
+ */
+
+#ifndef __ARCH_ZYNQMP_GPIO_H
+#define __ARCH_ZYNQMP_GPIO_H
+
+/* Empty file - sdhci requires this. */
+
+#endif