When building the various all_* targets, it was hard to tell which
board/build-type that each line of output applied to. Now, the
all_* target types will include something like:
CC [fw|cc ] flight/PiOS/STM32F10x/pios_gpio.c
which includes the necessary additional context.
This will help with identifying the context for warnings and errors
when building a group of targets.
The Entire Flash (EF) image for revo has a gap between
the end of the BL bank and the start of the FW bank.
This fills the gap with 0xFF and properly aligns the
FW image in flash.
A separate makefile for EF (Entire Flash) targets allows
the removal of board-specific hard-coded addresses. These
values can now be included from the board-info.mk files
for each board.
