wl1251: add NVS in EEPROM support

wl1251 supports also that NVS is stored in a separate EEPROM, add support
for that.

kvalo: use platform data instead Kconfig and use kernel style

Signed-off-by: David-John Willis <John.Willis@Distant-earth.com>
Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/include/linux/spi/wl12xx.h b/include/linux/spi/wl12xx.h
index 11430ca..aed64ed 100644
--- a/include/linux/spi/wl12xx.h
+++ b/include/linux/spi/wl12xx.h
@@ -26,6 +26,7 @@
 
 struct wl12xx_platform_data {
 	void (*set_power)(bool enable);
+	bool use_eeprom;
 };
 
 #endif