net: ravb: Add RZ/G2L Support

The Renesas R9A07G044L (RZ/G2L) SoC includes two Gigabit Ethernet
interfaces which can be supported using the ravb driver. Some RZ/G2L
specific steps need to be taken during initialization due to differences
between this SoC and previously supported SoCs. We also need to ensure
that the module reset is de-asserted after the module clock is enabled
but before any Ethernet register reads/writes take place.

Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com>
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 4434d36..950ed0f 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -860,7 +860,7 @@
 	select PHY_ETHERNET_ID
 	help
 	  This driver implements support for the Ethernet AVB block in
-	  Renesas M3 and H3 SoCs.
+	  several Renesas R-Car and RZ SoCs.
 
 config MPC8XX_FEC
 	bool "Fast Ethernet Controller on MPC8XX"