net: mscc: serval: Remove delay when serdes is configured

When serdes configuration was written in hardware there was a delay
of 100ms to be sure that configuration was written. But the delay is not
needed because already the function serdes_write it is checking that the
operation finished.

Therefore remove the mdelay. This improves the speed of configuring the
network driver.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/drivers/net/mscc_eswitch/serval_switch.c b/drivers/net/mscc_eswitch/serval_switch.c
index 2559f5d..2c30941 100644
--- a/drivers/net/mscc_eswitch/serval_switch.c
+++ b/drivers/net/mscc_eswitch/serval_switch.c
@@ -356,8 +356,6 @@
 	do {
 		data = readl(base + HSIO_MCB_SERDES1G_CFG);
 	} while (data & HSIO_MCB_SERDES1G_CFG_WR_ONE_SHOT);
-
-	mdelay(100);
 }
 
 static void serdes1g_setup(void __iomem *base, uint32_t addr,