STM32, Maple and Maple mini port to IDE 1.5.x

[system]

@Madias that should be a #define line in the same cpp file, in line 33.
https://github.com/greiman/SdFat/blob/master/SdFat/SdSpiSTM32F1.cpp
33 #define SPI1_DMAC_TX_CH DMA_CH3