aspeed-g7-pinctrl: pinctrl functions for I2C14 and I2C15

[spargaon]

There are no functions named DI2C14 and DI2C15,
only function declaration for I2C14 and I2C15.

FUNC_DECL_(I2C14, "I2C14", "DI2C14");
FUNC_DECL_(I2C15, "I2C15", "DI2C15");

So change the function names to I2C14 and I2C15.

This fixes such errors displayed by dmesg command:

aspeed-g7-soc1-pinctrl 14c02400.pinctrl: invalid function
DI2C14 in map table

aspeed-g7-soc1-pinctrl 14c02400.pinctrl: invalid function
DI2C15 in map table

[spargaon]

Tested on morocco-0257

root@morocco-0257:~#

dmesg output before the patch:
[ 1.495681] aspeed-g7-soc1-pinctrl 14c02400.pinctrl: invalid function DI2C15 in map table
[ 1.486489] aspeed-g7-soc1-pinctrl 14c02400.pinctrl: invalid function DI2C14 in map table

dmesg output after the patch:
[ 1.487418] aspeed-g7-soc1-pinctrl 14c02400.pinctrl: found group selector 190 for DI2C14
[ 1.498219] aspeed-g7-soc1-pinctrl 14c02400.pinctrl: found group selector 191 for DI2C15

[mahkurap]

Please make sure that the host is reachable on both the A1 and A2 with and without the rework,

[amd-knieman]

This looks good to me. Might be worth while to double check with the upstream that nothing else changed for aspeed-g7-pinctrl.

https://github.com/AspeedTech-BMC/linux/blob/121cd93bba48651ad236160e876389bc5b513a16/arch/arm64/boot/dts/aspeed/aspeed-g7-pinctrl.dtsi#L1121
https://github.com/AspeedTech-BMC/linux/blob/121cd93bba48651ad236160e876389bc5b513a16/arch/arm64/boot/dts/aspeed/aspeed-g7-pinctrl.dtsi#L1126

[spargaon]

This change is needed only for 6.18 of the Linux kernel.

In 6.8, we have

    pinctrl_di2c15_default: di2c15_default {
            function = "DI2C15";
            groups = "DI2C15";
    };

and there is a function declaration

FUNC_DECL_(DI2C15, "DI2C15");

---

In 6.18,

FUNC_DECL_(DI2C15, "DI2C15");
changed to
FUNC_DECL_(I2C15, "DI2C15");

So we have to change

    pinctrl_di2c15_default: di2c15_default {
            function = "DI2C15";
            groups = "DI2C15";
    };

to
pinctrl_di2c15_default: di2c15_default {
function = "I2C15";
groups = "DI2C15";
};

In morocco-0257, without this change, busses
i2c14 and i2c15 are not detected.