We currently default to "-mfloat-abi=hard -mfpu=fpv4-sp-d16" for M4F cores, and
and variations of "-mfloat-abi=soft" for the others. Keep the M4F default, and
move others to no FP flags for consistency, but allow overriding these flags
via the FP_FLAGS environment variable.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
This also report bug fixes about data alignment and bss storage to EFM32 &
LM3S targets.
Note: removed chrysn copyright statement as the file is a verbatim copy of
previous files.
