Bluetooth and serial reworked bluetooth and serial for RPI3,3P,0 ENABLE_PRINTK prints kernel messages to the console ENABLE_BLUETOOTH enables bluetooth on RPI0,3,3P ENABLE_MINIUART_OVERLAY sets the dtoverlay "pi3-miniuart-bt" switching console to ttyAMA0 (full uart) while using bluetooth over ttyS0 (miniuart). sets cpu to fixed lowest speed. Use ENABLE_TURBO to set CPU to fixed max speed. Can be used with ENABLE_CONSOLE or ENABLE_MINIUART_OVERLAY to supress fixed low speed and use fixed high speed instead - install bluetooth packages