boards: renesas: Edit rcar_h3ulcb full_name

Edit the rcar_h3ulcb board full_name
from specific A57 name to generic one
as it is used as main name for the whole board.

Signed-off-by: Aymeric Aillet <aymeric.aillet@iot.bzh>

Author: aaillet

boards/renesas/rcar_h3ulcb/board.yml

@@ -1,6 +1,6 @@
 board:
   name: rcar_h3ulcb
-  full_name: R-CAR H3 ARM CA57 (ARMv8)
+  full_name: R-Car H3ULCB
   vendor: renesas
   socs:
   - name: r8a77951