clk: mediatek: mt7988-infracfg: fix clocks for 2nd PCIe port

Due to what seems to be an undocumented oddity in MediaTek's MT7988
SoC design the CLK_INFRA_PCIE_PERI_26M_CK_P2 clock requires
CLK_INFRA_PCIE_PERI_26M_CK_P3 to be enabled.

This currently leads to PCIe port 2 not working in Linux.

Reflect the apparent relationship in the clk driver to make sure PCIe
port 2 of the MT7988 SoC works.

Fixes: 4b47194 ("clk: mediatek: add drivers for MT7988 SoC")
Suggested-by: Sam Shih <[email protected]>
Signed-off-by: Daniel Golle <[email protected]>
Link: https://lore.kernel.org/r/1da2506a51f970706bf4ec9509dd04e0471065e5.1710367453.git.daniel@makrotopia.org
Reviewed-by: AngeloGioacchino Del Regno <[email protected]>
Signed-off-by: Stephen Boyd <[email protected]>

Author: dangowrt

drivers/clk/mediatek/clk-mt7988-infracfg.c

@@ -156,7 +156,7 @@ static const struct mtk_gate infra_clks[] = {
 	GATE_INFRA0(CLK_INFRA_PCIE_PERI_26M_CK_P1, "infra_pcie_peri_ck_26m_ck_p1",
 		    "csw_infra_f26m_sel", 8),
 	GATE_INFRA0(CLK_INFRA_PCIE_PERI_26M_CK_P2, "infra_pcie_peri_ck_26m_ck_p2",
-		    "csw_infra_f26m_sel", 9),
+		    "infra_pcie_peri_ck_26m_ck_p3", 9),
 	GATE_INFRA0(CLK_INFRA_PCIE_PERI_26M_CK_P3, "infra_pcie_peri_ck_26m_ck_p3",
 		    "csw_infra_f26m_sel", 10),
 	/* INFRA1 */