MAINTAINERS: Add boards/phytec/phyboard_lyra to TI K3

We dropped the am62x from the phyboard_lyra_am62x name. Afterwards,
the files section for the TI K3 Platforms doesn't fit anymore.
Add the phyboard_lyra directly as all kits for this carrier-boards
use a K3 SOC.

Signed-off-by: Daniel Schultz <[email protected]>

Author: dnltz

MAINTAINERS.yml

@@ -3635,7 +3635,7 @@ TI K3 Platforms:
     - gramsay0
     - dnltz
   files:
-    - boards/phytec/*am62*/
+    - boards/phytec/phyboard_lyra/
     - boards/ti/*am62*/
     - drivers/*/*ti_k3*
     - dts/bindings/*/ti,k3*