[Feature][ZXW-65]merged P49 base code

Change-Id: I3e09c0c3d47483bc645f02310380ecb7fc6f4041
diff --git a/cap/zx297520v3/sources/base/setup-environment b/cap/zx297520v3/sources/base/setup-environment
index fc88192..0f2818c 100755
--- a/cap/zx297520v3/sources/base/setup-environment
+++ b/cap/zx297520v3/sources/base/setup-environment
@@ -165,6 +165,7 @@
         
     echo "MK_SDK_VERSION ?= '$MK_SDK_VERSION'" >>  conf/local.conf
     echo "BOOT_CTL ?= '$BOOT_CTL'" >>  conf/local.conf
+    echo "BB_HASH_IGNORE_MISMATCH ?= '1'" >>  conf/local.conf
     echo "STRORAGE_CONF ?= '$STRORAGE_CONF'" >>  conf/local.conf
     sed -e "s,PACKAGE_CLASSES ?=.*,PACKAGE_CLASSES ?= 'package_ipk',g" \
         -i conf/local.conf