net: macb: Increase halt timeout to accommodate 10Mbps link

Increase halt timeout to accommodate for 16K SRAM at 10Mbps rounded.
Signed-off-by: Harini Katakam <harini.katakam@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Link: https://lore.kernel.org/r/20230316083050.2108-1-harini.katakam@amd.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/cadence/macb_main.c

@@ -94,8 +94,7 @@ struct sifive_fu540_macb_mgmt {
 /* Graceful stop timeouts in us. We should allow up to
  * 1 frame time (10 Mbits/s, full-duplex, ignoring collisions)
  */
-#define MACB_HALT_TIMEOUT	1230
-
+#define MACB_HALT_TIMEOUT	14000
 #define MACB_PM_TIMEOUT  100 /* ms */
 
 #define MACB_MDIO_TIMEOUT	1000000 /* in usecs */