[DTS][GENIO] Add efuse configuration for HDMI PHY

This is the patch received from MediaTek to fix the HDMI drive strength.

The issue is that for the MT8390, the HDMITX impedance is calibrated,
and the calibrated results are combined into a number, which is written
into the efuse.
Therefore, the HDMITX PHY driver should read the number from the efuse
and set the relative impedance settings into the HDMITX PHY registers.
After that, you may adjust the driving strength based on
the calibrated impedance.

arch/arm64/boot/dts/mediatek/mt8188.dtsi

@@ -1409,6 +1409,8 @@ usb_host0: xhci@112b0000 {
 
 		hdmi_phy: hdmi-phy@11d5f000 {
 			compatible = "mediatek,mt8188-hdmi-phy";
+			nvmem-cells = <&hdmitx_efuse>;
+			nvmem-cell-names = "hdmitx_phy_efuse";
 			reg = <0 0x11d5f000 0 0x100>;
 			clocks = <&infracfg_ao CLK_INFRA_AO_HDMI_26M>;
 			clock-names = "pll_ref";

arch/arm64/boot/dts/mediatek/mt8370.dtsi

@@ -1371,6 +1371,8 @@ usb_host0: xhci@112b0000 {
 
 		hdmi_phy: hdmi-phy@11d5f000 {
 			compatible = "mediatek,mt8188-hdmi-phy";
+			nvmem-cells = <&hdmitx_efuse>;
+			nvmem-cell-names = "hdmitx_phy_efuse";
 			reg = <0 0x11d5f000 0 0x100>;
 			clocks = <&infracfg_ao CLK_INFRA_AO_HDMI_26M>;
 			clock-names = "pll_ref";