zephyr-kernel-src: Update branch reference.

The branch has been renamed upstream which causes FTFBS of VM and SP BPs;

Fixes: docs#115 (closed)

Signed-off-by: Pavel Zhukov pavel.zhukov@huawei.com

recipes-kernel/zephyr-kernel/zephyr-kernel-src.inc

@@ -41,7 +41,7 @@ SRC_URI = "\
     git://github.com/zephyrproject-rtos/loramac-node.git;protocol=https;branch=zephyr-v2.6;destsuffix=git/modules/lib/loramac-node;name=loramac-node \ 
     git://github.com/zephyrproject-rtos/openthread.git;protocol=https;branch=zephyr;destsuffix=git/modules/lib/openthread;name=openthread \ 
     git://github.com/zephyrproject-rtos/segger.git;protocol=https;destsuffix=git/modules/debug/segger;name=segger \ 
-    git://github.com/zephyrproject-rtos/sof.git;branch=zephyr_2.6;protocol=https;destsuffix=git/modules/audio/sof;name=sof \ 
+    git://github.com/zephyrproject-rtos/sof.git;branch=zephyr-v2.6;protocol=https;destsuffix=git/modules/audio/sof;name=sof \ 
     git://github.com/zephyrproject-rtos/tinycbor.git;branch=zephyr;protocol=https;destsuffix=git/modules/lib/tinycbor;name=tinycbor \ 
     git://github.com/zephyrproject-rtos/tinycrypt.git;protocol=https;destsuffix=git/modules/crypto/tinycrypt;name=tinycrypt \ 
     git://github.com/zephyrproject-rtos/littlefs.git;branch=zephyr;protocol=https;destsuffix=git/modules/fs/littlefs;name=littlefs \