[MIPS] Fix UNCACHED_SDRAM

PHYSADDR is for physical address, KSEG1ADDR is for uncached.

Signed-off-by: Vlad Lungu <vlad@comsys.ro>
Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com>

include/asm-mips/addrspace.h

@@ -49,7 +49,7 @@
    cannot access physical memory directly from core */
 #define UNCACHED_SDRAM(a) (((unsigned long)(a)) | 0x20000000)
 #else	/* !CONFIG_AU1X00 */
-#define UNCACHED_SDRAM(a) PHYSADDR(a)
+#define UNCACHED_SDRAM(a) KSEG1ADDR(a)
 #endif	/* CONFIG_AU1X00 */
 #endif	/* __ASSEMBLY__ */
 /*