mips: Move cpu/mips/* to arch/mips/cpu/*

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
diff --git a/board/pb1x00/pb1x00.c b/board/pb1x00/pb1x00.c
index 773e446..2510ddf 100644
--- a/board/pb1x00/pb1x00.c
+++ b/board/pb1x00/pb1x00.c
@@ -37,7 +37,7 @@
 #define BCSR_PCMCIA_PC0DRVEN		0x0010
 #define BCSR_PCMCIA_PC0RST		0x0080
 
-/* In cpu/mips/cpu.c */
+/* In arch/mips/cpu/cpu.c */
 void write_one_tlb( int index, u32 pagemask, u32 hi, u32 low0, u32 low1 );
 
 int checkboard (void)