Added second step-down converter for 3.3 V
* Second TPS562203-based converter for 3.3 V rail. * Changed inductors for a thinner variant 2.8 mm instead of 4.8 mm * Recommended inductors are SRN6028-4R7M or FNR6028S4R7MT * Removed 3.3V LDO output from the SoM
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