build: use 'vercomp' without relying on it being in PATH
build: use 'vercomp' without relying on it being in PATH

Not every environment has $ZEPHYR_BASE/scripts/ in the PATH, which can
cause conflicts (eg: the test environment doesn't define it to
simplify the build instructions).

Using vercomp as $ZEPHYR_BASE/scripts/vercomp, we remove this
requirement.

Change-Id: I8c390f905907f42d1ba2b4d1378e188705164e13
Signed-off-by: Inaky Perez-Gonzalez <96af2f95d738a33e3cb28686ea74cc090643af9b@intel.com>

bigdinotech/zephyr,GiulianoFranchetto/zephyr,kraj/zephyr,fbsder/zephyr,aceofall/zephyr-iotos,fbsder/zephyr,fractalclone/zephyr-riscv,holtmann/zephyr,galak/zephyr,kraj/zephyr,nashif/zephyr,galak/zephyr,explora26/zephyr,rsalveti/zephyr,aceofall/zephyr-iotos,rsalveti/zephyr,holtmann/zephyr,bboozzoo/zephyr,explora26/zephyr,ldts/zephyr,rsalveti/zephyr,sharronliu/zephyr,Vudentz/zephyr,erwango/zephyr,bboozzoo/zephyr,bigdinotech/zephyr,holtmann/zephyr,punitvara/zephyr,finikorg/zephyr,runchip/zephyr-cc3200,runchip/zephyr-cc3220,tidyjiang8/zephyr-doc,erwango/zephyr,sharronliu/zephyr,aceofall/zephyr-iotos,pklazy/zephyr,pklazy/zephyr,runchip/zephyr-cc3220,nashif/zephyr,zephyrproject-rtos/zephyr,zephyriot/zephyr,GiulianoFranchetto/zephyr,fbsder/zephyr,ldts/zephyr,tidyjiang8/zephyr-doc,bboozzoo/zephyr,holtmann/zephyr,kraj/zephyr,fractalclone/zephyr-riscv,zephyrproject-rtos/zephyr,runchip/zephyr-cc3200,holtmann/zephyr,GiulianoFranchetto/zephyr,punitvara/zephyr,galak/zephyr,fractalclone/zephyr-riscv,zephyrproject-rtos/zephyr,fbsder/zephyr,kraj/zephyr,zephyriot/zephyr,erwango/zephyr,punitvara/zephyr,runchip/zephyr-cc3200,zephyriot/zephyr,mbolivar/zephyr,Vudentz/zephyr,sharronliu/zephyr,sharronliu/zephyr,mbolivar/zephyr,fractalclone/zephyr-riscv,bigdinotech/zephyr,tidyjiang8/zephyr-doc,rsalveti/zephyr,bboozzoo/zephyr,tidyjiang8/zephyr-doc,tidyjiang8/zephyr-doc,runchip/zephyr-cc3220,nashif/zephyr,mbolivar/zephyr,mbolivar/zephyr,pklazy/zephyr,fractalclone/zephyr-riscv,fbsder/zephyr,bigdinotech/zephyr,GiulianoFranchetto/zephyr,nashif/zephyr,aceofall/zephyr-iotos,explora26/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,bboozzoo/zephyr,pklazy/zephyr,ldts/zephyr,zephyrproject-rtos/zephyr,ldts/zephyr,explora26/zephyr,finikorg/zephyr,galak/zephyr,bigdinotech/zephyr,Vudentz/zephyr,zephyriot/zephyr,sharronliu/zephyr,runchip/zephyr-cc3200,punitvara/zephyr,rsalveti/zephyr,finikorg/zephyr,erwango/zephyr,punitvara/zephyr,zephyriot/zephyr,pklazy/zephyr,galak/zephyr,Vudentz/zephyr,erwango/zephyr,runchip/zephyr-cc3220,Vudentz/zephyr,GiulianoFranchetto/zephyr,aceofall/zephyr-iotos,Vudentz/zephyr,nashif/zephyr,runchip/zephyr-cc3220,runchip/zephyr-cc3200,ldts/zephyr,finikorg/zephyr,mbolivar/zephyr,explora26/zephyr,kraj/zephyr