mpc83xx: remove redundant MPC83xx_RESET #define

This macro is only used (tested for existence) in mpc83xx.c, which
unconditionally includes mpc83xx.h where it is unconditionally
defined. Removing it makes the remaining code easier to read.

Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>

arch/powerpc/cpu/mpc83xx/cpu.c

@@ -127,16 +127,10 @@ int checkcpu(void)
 int do_reset(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 {
 	ulong msr;
-#ifndef MPC83xx_RESET
-	ulong addr;
-#endif
-
 	volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
 
 	puts("Resetting the board.\n");
 
-#ifdef MPC83xx_RESET
-
 	/* Interrupts and MMU off */
 	msr = mfmsr();
 	msr &= ~(MSR_EE | MSR_IR | MSR_DR);
@@ -156,24 +150,6 @@ int do_reset(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 	/* perform reset, only one bit */
 	immap->reset.rcr = RCR_SWHR;
 
-#else	/* ! MPC83xx_RESET */
-
-	immap->reset.rmr = RMR_CSRE;    /* Checkstop Reset enable */
-
-	/* Interrupts and MMU off */
-	msr = mfmsr();
-	msr &= ~(MSR_ME | MSR_EE | MSR_IR | MSR_DR);
-	mtmsr(msr);
-
-	/*
-	 * Trying to execute the next instruction at a non-existing address
-	 * should cause a machine check, resulting in reset
-	 */
-	addr = CONFIG_SYS_RESET_ADDRESS;
-
-	((void (*)(void)) addr) ();
-#endif	/* MPC83xx_RESET */
-
 	return 1;
 }
 #endif

include/mpc83xx.h

@@ -12,11 +12,6 @@
 #include <asm/e300.h>
 #endif
 
-/*
- * MPC83xx cpu provide RCR register to do reset thing specially
- */
-#define MPC83xx_RESET
-
 /*
  * System reset offset (PowerPC standard)
  */