net: cadence: macb: Enable RMII for SAMA7 gem

This macro enables the RMII mode bit in the USRIO register when RMII
mode is requested.

Signed-off-by: Ryan Wanner <Ryan.Wanner@microchip.com>
Signed-off-by: NipaLocal <nipa@local>

Author: ryan-wanner

drivers/net/ethernet/cadence/macb_main.c

@@ -5103,6 +5103,7 @@ static const struct macb_config mpfs_config = {
 
 static const struct macb_config sama7g5_gem_config = {
 	.caps = MACB_CAPS_GIGABIT_MODE_AVAILABLE | MACB_CAPS_CLK_HW_CHG |
+		MACB_CAPS_USRIO_DEFAULT_IS_MII_GMII |
 		MACB_CAPS_MIIONRGMII | MACB_CAPS_GEM_HAS_PTP,
 	.dma_burst_length = 16,
 	.clk_init = macb_clk_init,