powerpc: B4420: Remove macro CONFIG_PPC_B4420
Replace CONFIG_PPC_B4420 with ARCH_B4420 in Kconfig and clean up
existing macros.
diff --git a/include/configs/B4860QDS.h b/include/configs/B4860QDS.h
index a1468b8..cd4333f 100644
--- a/include/configs/B4860QDS.h
+++ b/include/configs/B4860QDS.h
@@ -73,7 +73,7 @@
#define CONFIG_FSL_PCI_INIT /* Use common FSL init code */
#define CONFIG_SYS_PCI_64BIT /* enable 64-bit PCI resources */
-#ifndef CONFIG_PPC_B4420
+#ifndef CONFIG_ARCH_B4420
#define CONFIG_SYS_SRIO
#define CONFIG_SRIO1 /* SRIO port 1 */
#define CONFIG_SRIO2 /* SRIO port 2 */