powerpc: mpc8260: consolidate CONFIG_MPC8260 and CONFIG_8260

Before this commit, CONFIG_MPC8260 and CONFIG_8260
were used mixed-up.

All boards with mpc8260 cpu defined both of them:
  - CONFIG_MPC8260 was defined in board config headers
      and include/common.h
  - CONFIG_8260 was defined arch/powerpc/cpu/mpc8260/config.mk

We do not need to have both of them.
This commit keeps only CONFIG_MPC8260.

This commit does:
 - Delete CONFIG_8260 and CONFIG_MPC8260 definition
   in config headers and include/common.h
 - Rename CONFIG_8260 to CONFIG_MPC8260
    in arch/powerpc/cpu/mpc8260/config.mk.
 - Rename #ifdef CONFIG_8260 to #ifdef CONFIG_MPC8260

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Wolfgang Denk <wd@denx.de>
diff --git a/arch/powerpc/lib/kgdb.c b/arch/powerpc/lib/kgdb.c
index 19a56db..01a7708 100644
--- a/arch/powerpc/lib/kgdb.c
+++ b/arch/powerpc/lib/kgdb.c
@@ -159,7 +159,7 @@
 
 #define SPACE_REQUIRED	((32*4)+(32*8)+(6*4))
 
-#ifdef CONFIG_8260
+#ifdef CONFIG_MPC8260
 /* store floating double indexed */
 #define STFDI(n,p)	__asm__ __volatile__ ("stfd " #n ",%0" : "=o"(p[2*n]))
 /* store floating double multiple */
@@ -190,7 +190,7 @@
 		*ptr++ = regs->gpr[i];
 
 	/* Floating Point Regs */
-#ifdef CONFIG_8260
+#ifdef CONFIG_MPC8260
 	STFDM(ptr);
 	ptr += 32*2;
 #else
@@ -213,7 +213,7 @@
 
 /* set the value of the CPU registers */
 
-#ifdef CONFIG_8260
+#ifdef CONFIG_MPC8260
 /* load floating double */
 #define LFD(n,v)	__asm__ __volatile__ ("lfd " #n ",%0" :: "o"(v))
 /* load floating double indexed */
@@ -252,7 +252,7 @@
 		regs->gpr[regno] = *ptr;
 	else switch (regno) {
 
-#ifdef CONFIG_8260
+#ifdef CONFIG_MPC8260
 #define caseF(n) \
 	case (n) + 32:	LFD(n, *ptr);		break;
 
@@ -298,7 +298,7 @@
 		regs->gpr[i] = *ptr++;
 
 	/* Floating Point Regs */
-#ifdef CONFIG_8260
+#ifdef CONFIG_MPC8260
 	LFDM(ptr);
 #endif
 	ptr += 32*2;