Re-enable some features required for the board to still build and the lora
driver to run.
This board only has 192KB of flash total, so default stm32 build is very
close to the limit.
Before:
LINK build-B_L072Z_LRWAN1/firmware.elf
text data bss dec hex filename
184352 68 14112 198532 30784 build-B_L072Z_LRWAN1/firmware.elf
(12256 bytes free)
After:
LINK build-B_L072Z_LRWAN1/firmware.elf
text data bss dec hex filename
155028 68 14052 169148 294bc build-B_L072Z_LRWAN1/firmware.elf
(41580 bytes free)
This work was funded through GitHub Sponsors.
Signed-off-by: Angus Gratton <angus@redyak.com.au>