cmake: refactor BRANCH_TYPE evaluation

Change-Id: Idc811e231dd993e9ff82c6080a7da69149b6da77
Signed-off-by: Artur Harasimiuk <[email protected]>

Author: ArturHarasimiuk

.branch

@@ -49,7 +49,8 @@ set(GLOBAL PROPERTY NEO_OCL_COMPONENTS_LIST "")
 define_property(GLOBAL PROPERTY NEO_L0_COMPONENTS_LIST BRIEF_DOCS "List of components" FULL_DOCS "List of components to create packages")
 set(GLOBAL PROPERTY NEO_L0_COMPONENTS_LIST "")
 
-set(BRANCH_TYPE "")
+file(READ ".branch" BRANCH_TYPE)
+string(STRIP "${BRANCH_TYPE}" BRANCH_TYPE)
 set(BRANCH_DIR_SUFFIX "/${BRANCH_TYPE}")
 list(APPEND BRANCH_DIR_LIST "/")
 if(NOT "${BRANCH_TYPE}" STREQUAL "")