Moved some GPS code from mw.c into gps_common.c.
Moved pid values into a pidProfile_t structure; this was done so that
gps_common.c does not have a dependency on config_profile.h.
pidProfile_t lives in flight_common.h now.
Moved gps profile settings from profile_t into gpsProfile_t for the same
reason.
Removed gps_common.c's dependency on masterConfig_t by passing needed
variables into gpsInit().
separate concerns and help reduce and clarify dependencies.
cfg and mcfg are too similarly named and are not obvious. Renamed cfg
to currentProfile and mcfg to masterConfig. This will increase source
code line length somewhat but that's ok; lines of code doing too much
are now easier to spot.
serial_common.c/h. decouple runtime_config from serial ports. decouple
buzzer from serial ports. decouple opening of the main serial port from
the msp code. decouple serial rx providers from runtime_config. rename
core_t to serialPorts_t since it only contained serial ports. It's now
clear which files use serial ports based on the header files they
include.
channels when using Spektrum 2048 - untested. Renamed and extracted
core_t.numRCChannels to rxConfig.channelCount so that future commits can
clean up core_t further since core_t contains completely unrelated
properties.
code into rx_common.c. Moved some GPS code into gps_common.c. Isolated
some GPS functions into gps_common.c that were called from mw.c/loop().
moved gimbal defines into gimbal.h. Moved sound & light code into
statusindicator.c
remove dependency on board.h and mw.h on a few files.
Moved rx configuration paramaters into rxConfig in order to remove the
dependency on config_t from the sbus rx code - sumd/spektrum to follow.
Avoided use of YAW/PITCH/ROLL in some files since those constants are
from an unrelated enum type.
Replaced some magic numbers with constants to remove comments and
improve code readability.
Note, due to the tight coupling and global variable usage it was
difficult to create a smaller commit.
