ppc4xx: Replace 4xx lowercase SPR references

Signed-off-by: Matthias Fuchs <matthias.fuchs@esd.eu>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/cpu/ppc4xx/cpu.c b/cpu/ppc4xx/cpu.c
index fb3837c..e12a784 100644
--- a/cpu/ppc4xx/cpu.c
+++ b/cpu/ppc4xx/cpu.c
@@ -272,7 +272,7 @@
 	mtdcr (cpc0_sys0, sys0);
 	mtdcr (cpc0_sys1, sys1);
 	mtdcr (cntrl0, mfdcr (cntrl0) & ~0x80000000);	/* Clr SWE */
-	mtspr (dbcr0, 0x20000000);	/* Reset the chip */
+	mtspr (SPRN_DBCR0, 0x20000000);	/* Reset the chip */
 
 	return 1;
 }
@@ -654,12 +654,12 @@
 	board_reset();
 #else
 #if defined(CONFIG_SYS_4xx_RESET_TYPE)
-	mtspr(dbcr0, CONFIG_SYS_4xx_RESET_TYPE << 28);
+	mtspr(SPRN_DBCR0, CONFIG_SYS_4xx_RESET_TYPE << 28);
 #else
 	/*
 	 * Initiate system reset in debug control register DBCR
 	 */
-	mtspr(dbcr0, 0x30000000);
+	mtspr(SPRN_DBCR0, 0x30000000);
 #endif /* defined(CONFIG_SYS_4xx_RESET_TYPE) */
 #endif /* defined(CONFIG_BOARD_RESET) */
 
@@ -697,7 +697,7 @@
 	/*
 	 * Clear TSR(WIS) bit
 	 */
-	mtspr(tsr, 0x40000000);
+	mtspr(SPRN_TSR, 0x40000000);
 }
 #endif	/* CONFIG_WATCHDOG */