powerpc: P3041: Remove macro CONFIG_PPC_P3041

Replace CONFIG_PPC_P3041 with ARCH_P3041 in Kconfig and clean up
existing macros.

Signed-off-by: York Sun <york.sun@nxp.com>
diff --git a/arch/powerpc/include/asm/config_mpc85xx.h b/arch/powerpc/include/asm/config_mpc85xx.h
index cd47883..8f0a250 100644
--- a/arch/powerpc/include/asm/config_mpc85xx.h
+++ b/arch/powerpc/include/asm/config_mpc85xx.h
@@ -338,7 +338,7 @@
 #define CONFIG_SYS_FSL_ERRATUM_A006261
 #define CONFIG_SYS_FSL_A004447_SVR_REV	0x11
 
-#elif defined(CONFIG_PPC_P3041)
+#elif defined(CONFIG_ARCH_P3041)
 #define CONFIG_SYS_FSL_QORIQ_CHASSIS1
 #define CONFIG_FSL_CORENET		/* Freescale CoreNet platform */
 #define CONFIG_MAX_CPUS			4