build: do not rename elf file, copy it
build: do not rename elf file, copy it

We break dependency if we rename the zephyr.elf file, we should keep it
as it is an essential dependency in the build system. Instead, copy the
file.

Fixes #10639

Signed-off-by: Anas Nashif <0d9952ec84ac43c159f6b7e7ed99a9080c00dd6e@intel.com>

ldts/zephyr,finikorg/zephyr,Vudentz/zephyr,nashif/zephyr,ldts/zephyr,punitvara/zephyr,GiulianoFranchetto/zephyr,explora26/zephyr,galak/zephyr,punitvara/zephyr,ldts/zephyr,galak/zephyr,finikorg/zephyr,galak/zephyr,punitvara/zephyr,GiulianoFranchetto/zephyr,ldts/zephyr,Vudentz/zephyr,explora26/zephyr,nashif/zephyr,GiulianoFranchetto/zephyr,explora26/zephyr,nashif/zephyr,zephyrproject-rtos/zephyr,ldts/zephyr,Vudentz/zephyr,explora26/zephyr,Vudentz/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr,finikorg/zephyr,finikorg/zephyr,explora26/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,nashif/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,punitvara/zephyr,Vudentz/zephyr,GiulianoFranchetto/zephyr,GiulianoFranchetto/zephyr,zephyrproject-rtos/zephyr,punitvara/zephyr,nashif/zephyr