microblaze: Add gpio.h

Gpio support is not implemented yet. Adding it because of fdtdec.

Signed-off-by: Michal Simek <monstr@monstr.eu>

arch/microblaze/include/asm/gpio.h

@@ -0,0 +1,41 @@
+#ifndef _ASM_MICROBLAZE_GPIO_H_
+#define _ASM_MICROBLAZE_GPIO_H_
+
+#include <asm/io.h>
+
+static inline int gpio_request(unsigned gpio, const char *label)
+{
+	return 0;
+}
+
+static inline int gpio_free(unsigned gpio)
+{
+	return 0;
+}
+
+static inline int gpio_direction_input(unsigned gpio)
+{
+	return 0;
+}
+
+static inline int gpio_direction_output(unsigned gpio, int value)
+{
+	return 0;
+}
+
+static inline int gpio_get_value(unsigned gpio)
+{
+	return 0;
+}
+
+static inline int gpio_set_value(unsigned gpio, int value)
+{
+	return 0;
+}
+
+static inline int gpio_is_valid(int number)
+{
+	return 0;
+}
+#endif
+