rt2x00: Use ioremap for SoC devices instead of KSEG1ADDR.

Make the code a bit more portable to architectures that do not support
KSEG1ADDR.

Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Tested-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c
index b0946f8..433c7f3 100644
--- a/drivers/net/wireless/rt2x00/rt2800pci.c
+++ b/drivers/net/wireless/rt2x00/rt2800pci.c
@@ -87,9 +87,11 @@
 #if defined(CONFIG_RALINK_RT288X) || defined(CONFIG_RALINK_RT305X)
 static void rt2800pci_read_eeprom_soc(struct rt2x00_dev *rt2x00dev)
 {
-	u32 *base_addr = (u32 *) KSEG1ADDR(0x1F040000); /* XXX for RT3052 */
+	void __iomem *base_addr = ioremap(0x1F040000, EEPROM_SIZE);
 
 	memcpy_fromio(rt2x00dev->eeprom, base_addr, EEPROM_SIZE);
+
+	iounmap(base_addr);
 }
 #else
 static inline void rt2800pci_read_eeprom_soc(struct rt2x00_dev *rt2x00dev)