rdc321x: GPIO routines bugfixes

This patch fixes the use of GPIO routines which are in the PCI
configuration space of the RDC321x, therefore reading/writing
to this space without spinlock protection can be problematic.

We also now request and free GPIOs and support the MGB100
board, previous code was very AR525W-centric.

Signed-off-by: Volker Weiss <volker@tintuc.de>
Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/asm-x86/mach-rdc321x/gpio.h b/include/asm-x86/mach-rdc321x/gpio.h
index db31b92..acce0b7 100644
--- a/include/asm-x86/mach-rdc321x/gpio.h
+++ b/include/asm-x86/mach-rdc321x/gpio.h
@@ -5,19 +5,20 @@
 extern void rdc_gpio_set_value(unsigned gpio, int value);
 extern int rdc_gpio_direction_input(unsigned gpio);
 extern int rdc_gpio_direction_output(unsigned gpio, int value);
-
+extern int rdc_gpio_request(unsigned gpio, const char *label);
+extern void rdc_gpio_free(unsigned gpio);
+extern void __init rdc321x_gpio_setup(void);
 
 /* Wrappers for the arch-neutral GPIO API */
 
 static inline int gpio_request(unsigned gpio, const char *label)
 {
-	/* Not yet implemented */
-	return 0;
+	return rdc_gpio_request(gpio, label);
 }
 
 static inline void gpio_free(unsigned gpio)
 {
-	/* Not yet implemented */
+	rdc_gpio_free(gpio);
 }
 
 static inline int gpio_direction_input(unsigned gpio)