dt-bindings: arm: fsl: Add compatible for i.MX95 15x15 FRDM board

dt-bindings: arm: fsl: Add compatible for i.MX95 15x15 FRDM board

Introduce a new DT compatible string for the NXP i.MX95 15x15 FRDM
development board, a compact and cost-effective platform based on
the i.MX95 applications processor.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: Laurentiu Mihalcea <laurentiu.mihalcea@nxp.com>
Signed-off-by: Lei Xu <lei.xu@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>