Damien George a0623a081c stm32/Makefile: Allow boards to extend all SRC variables.
And rename SRC_HAL -> HAL_SRC_C and SRC_USBDEV -> USBDEV_SRC_C for
consistency with other source variables.

Follow on from 0fff2e03fe07471997a6df6f92c6960cfd225dc0

Signed-off-by: Damien George <damien@micropython.org>
2020-11-13 11:22:28 +11:00
..