net: cadence: macb: sama7g5_emac: Remove USARIO CLKEN flag

Remove USARIO_CLKEN flag since this is now a device tree argument and
not fixed to the SoC.

This will instead be selected by the "cdns,refclk-ext"
device tree property.

Signed-off-by: Ryan Wanner <Ryan.Wanner@microchip.com>
Link: https://patch.msgid.link/1e7a8c324526f631f279925aa8a6aa937d55c796.1752510727.git.Ryan.Wanner@microchip.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Author: ryan-wanner

drivers/net/ethernet/cadence/macb_main.c

@@ -5113,8 +5113,7 @@ static const struct macb_config sama7g5_gem_config = {
 
 static const struct macb_config sama7g5_emac_config = {
 	.caps = MACB_CAPS_USRIO_DEFAULT_IS_MII_GMII |
-		MACB_CAPS_USRIO_HAS_CLKEN | MACB_CAPS_MIIONRGMII |
-		MACB_CAPS_GEM_HAS_PTP,
+		MACB_CAPS_MIIONRGMII | MACB_CAPS_GEM_HAS_PTP,
 	.dma_burst_length = 16,
 	.clk_init = macb_clk_init,
 	.init = macb_init,