abb.c & init.c: sync with Magnetite for Luna additions These Luna target-specific additions are conditionalized on CONFIG_TARGET_LUNA, a C preprocessor symbol that will never be defined in Selenite, hence this change has exactly zero impact on FC Selenite. However, they are being pulled in as a sync in order to keep the diff between Magnetite and Selenite to a minimum; keeping this diff to a minimum increases our opportunities for possible evolution of future FC firmwares.

# hw properties
LINK_SCRIPT_SRC=src/cs/system/template/gsm_ds_motc139.template
FLASH_BASE_ADDR=0x10000
FLASH_SECTOR_SIZE=0x10000

# default config
GPRS=0
SRVC=0
FCHG_STATE=1
RVTMUX_ON_MODEM=1