regulator: aw37503: add regulator driver for Awinic

Merge series from like@awinic.com:

Add regulator driver for the device Awinic AW37503 which is
single inductor - dual output power supply device. AW37503
device is designed to support general positive/negative
driven applications like TFT display panels.
This commit is contained in:
Mark Brown 2023-08-22 00:06:00 +01:00
commit 31eedc155c
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