MAINTAINERS: Add NXP SOF maintainers.

Add dbaluta and iuliana-prodan to NXP collaborators list to support SOF.

Signed-off-by: David Leach <david.leach@nxp.com>
diff --git a/MAINTAINERS.yml b/MAINTAINERS.yml
index c9c0497..cd45275 100644
--- a/MAINTAINERS.yml
+++ b/MAINTAINERS.yml
@@ -2223,6 +2223,8 @@
     - EmilioCBen
     - decsny
     - manuargue
+    - dbaluta
+    - iuliana-prodan
   files:
     - boards/arm/mimx*/
     - boards/arm/frdm_k*/