scripts: gen_relocate_app: check if argument matches
scripts: gen_relocate_app: check if argument matches

Check each line whether contains the correct pattern
${location}:${file} before splitting because it
turns out that script passes also compile
definitions added in project CMakeLists.txt such as:

add_compile_definitions(ABCD="XYZ")

which results in the build failure.

Signed-off-by: Bartosz Bilas <f2224e9ed20f1638b56e0c6dc7148d2dfd81819f@grinn-global.com>

finikorg/zephyr,galak/zephyr,finikorg/zephyr,finikorg/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,galak/zephyr,finikorg/zephyr