PCI: mediatek-gen3: Remove leftover mac_reset assert for Airoha EN7581 SoC

Remove a leftover assert for mac_reset line in mtk_pcie_en7581_power_up().

This is not harmful since EN7581 does not requires mac_reset and
mac_reset is not defined in EN7581 device tree.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://lore.kernel.org/r/20250201-pcie-en7581-remove-mac_reset-v2-1-a06786cdc683@kernel.org
[kwilczynski: commit log]
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>

Author: LorenzoBianconi

drivers/pci/controller/pcie-mediatek-gen3.c

@@ -940,7 +940,6 @@ static int mtk_pcie_en7581_power_up(struct mtk_gen3_pcie *pcie)
 	 */
 	reset_control_bulk_assert(pcie->soc->phy_resets.num_resets,
 				  pcie->phy_resets);
-	reset_control_assert(pcie->mac_reset);
 
 	/* Wait for the time needed to complete the reset lines assert. */
 	msleep(PCIE_EN7581_RESET_TIME_MS);