CODEOWNERS: add codeowner for SOF with Zephyr on NXP i.MX8
CODEOWNERS: add codeowner for SOF with Zephyr on NXP i.MX8

Add myself and Daniel Baluta as codeowners for i.MX8 related files for
SOF with Zephyr OS.

Signed-off-by: Iuliana Prodan <7b818b64817a481630781727960c0e7b728288f0@nxp.com>

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