net: macb: Add PTP support to GEM for sama7g5

Add PTP capability to the Gigabit Ethernet MAC.
Signed-off-by: NDurai Manickam KR <durai.manickamkr@microchip.com>
Reviewed-by: NClaudiu Beznea <claudiu.beznea@microchip.com>
Reviewed-by: NMichal Swiatkowski <michal.swiatkowski@linux.intel.com>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/cadence/macb_main.c

@@ -4844,7 +4844,7 @@ 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_MIIONRGMII,
+		MACB_CAPS_MIIONRGMII | MACB_CAPS_GEM_HAS_PTP,
 	.dma_burst_length = 16,
 	.clk_init = macb_clk_init,
 	.init = macb_init,