Schematic incorrect (pdf and kicad) lists stm32 as STM32F42xZ

As of 29/8/19 v1.1 hardware:

Schematic (pdf and kicad) lists stm32 as STM32F42xZ (pcbs, Makefile and BOM export list it as STM32F765ZGT)

[danngreen]

That's correct, the kicad symbol name is STM32F42x, and it's identical to the F765 but should be named properly. I fixed it.