tests: kernel: device: Add RTM link, description and doxygen group
tests: kernel: device: Add RTM link, description and doxygen group

Add RTM links, description and doxygen group for device test cases.

Signed-off-by: Praful Swarnakar <b56c70d8c3b21a158307ccd68a699c2a05d34cb8@intel.com>

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