mpc85xx/p1020:Define number of USB controllers used on P1020RDB-PD platform

P1020 SoC which has two USB controllers, but only first one is used
on this platform.

Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>

arch/powerpc/include/asm/config_mpc85xx.h

@@ -247,7 +247,9 @@
 #define CONFIG_SYS_FSL_ERRATUM_ELBC_A001
 #define CONFIG_SYS_FSL_ERRATUM_ESDHC111
 #define CONFIG_SYS_FSL_ERRATUM_A005125
+#ifndef CONFIG_USB_MAX_CONTROLLER_COUNT
 #define CONFIG_USB_MAX_CONTROLLER_COUNT	2
+#endif
 
 #elif defined(CONFIG_P1021)
 #define CONFIG_MAX_CPUS			2

include/configs/p1_p2_rdb_pc.h

@@ -886,6 +886,10 @@
 #endif
 #endif
 
+#if defined(CONFIG_P1020RDB_PD)
+#define CONFIG_USB_MAX_CONTROLLER_COUNT	1
+#endif
+
 #define CONFIG_MMC
 
 #ifdef CONFIG_MMC