[Feature][ZXW-88]merge P50 version

Only Configure: No
Affected branch: master
Affected module: unknown
Is it affected on both ZXIC and MTK: only ZXIC
Self-test: Yes
Doc Update: No

Change-Id: I34667719d9e0e7e29e8e4368848601cde0a48408
diff --git a/boot/common/src/loader/drivers/bbt.c b/boot/common/src/loader/drivers/bbt.c
index bf46266..471a86f 100755
--- a/boot/common/src/loader/drivers/bbt.c
+++ b/boot/common/src/loader/drivers/bbt.c
@@ -56,7 +56,7 @@
 	uint32_t block_size = flash.block_size;
 	uint8_t oob[256];   /* ÕâÀﶨÒå×î´óµÄOOB SIZE */
 //#ifdef CONFIG_ZX297520V3E_MDL_AB
-#if defined(CONFIG_ZX297520V3E_MDL_AB) || defined(CONFIG_ZX297520V3E_VEHICLE_DC)
+#if defined(CONFIG_ZX297520V3E_MDL_AB) || defined(CONFIG_ZX297520V3E_VEHICLE_DC) || defined(CONFIG_ZX297520V3E_VEHICLE_DC_REF)
 	uint32_t block_nums = 72;
 #else
 	uint32_t block_nums = 17;