sh: Split out PXSEG segmentation per-CPU family.

The CPU family abstraction already exists, so move out the PXSEG
definition for each one. SH-2A already has this special cased,
and SH-5 will as well.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/include/asm-sh/cpu-sh4/addrspace.h b/include/asm-sh/cpu-sh4/addrspace.h
index bb2e1b0..a3fa733 100644
--- a/include/asm-sh/cpu-sh4/addrspace.h
+++ b/include/asm-sh/cpu-sh4/addrspace.h
@@ -10,6 +10,12 @@
 #ifndef __ASM_CPU_SH4_ADDRSPACE_H
 #define __ASM_CPU_SH4_ADDRSPACE_H
 
+#define P0SEG		0x00000000
+#define P1SEG		0x80000000
+#define P2SEG		0xa0000000
+#define P3SEG		0xc0000000
+#define P4SEG		0xe0000000
+
 /* Detailed P4SEG  */
 #define P4SEG_STORE_QUE	(P4SEG)
 #define P4SEG_IC_ADDR	0xf0000000