regulator: PM8350B LDO support

Esteban Urrutia <esteuwu@proton.me> says:

The PM8350B PMIC has an LDO regulator which seems to be mostly used for
powering display driver ICs.
On my device's schematics, vdd-l1-supply is represented as VIN_DDIC, and
vdd-l1 is represented as VREG_DDIC.
Downstream this LDO is of type pmic5-ldo and I assume it should be of
type pmic5_nldo upstream, since this is the type of regulator with the
least margin error for the reference voltage, which is 1250-1296mV for
my device.

Link: https://patch.msgid.link/20260723-pm8350b-ldo-v1-0-42b5428a0d3f@proton.me