The SPI driver for the Renesas RPC-IF is present on the RZ/G2
Series.  Add that to the description.
Suggested-by: Biju Das <biju.das.jz@bp.renesas.com>
Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20210102115412.3402059-3-aford173@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
        tristate "Renesas RPC-IF SPI driver"
        depends on RENESAS_RPCIF
        help
-         SPI driver for Renesas R-Car Gen3 RPC-IF.
+         SPI driver for Renesas R-Car Gen3 or RZ/G2 RPC-IF.
 
 config SPI_RSPI
        tristate "Renesas RSPI/QSPI controller"