Initial addition of Huawei MG323-B cellular module. 3.8V LDO Vreg circuit and antenna circuit from Seeed Studio cellular shield design.
Removed Vreg circuit, powering directly from VBAT into cellular module now. Removed level shifting circuit, 3.3V IO from Pinoccio should work ~okay~ with the cellular module. DRC errors in Pinoccio 2.4Ghz RF section, weren't there before...