Add Hercules RM46L8 Launchpad support (Cortex R4F)

.gitignore

include/arch/rm46l8lp/driver/counter.h

include/arch/rm46l8lp/driver/gpio.h

include/arch/rm46l8lp/driver/stdout.h

include/arch/rm46l8lp/driver/uptime.h

include/arch/rm46l8lp/halcogen/Device_RM46.h

include/arch/rm46l8lp/halcogen/Device_TMS570LS12.h

include/arch/rm46l8lp/halcogen/Device_header.h

include/arch/rm46l8lp/halcogen/Device_types.h

include/arch/rm46l8lp/halcogen/MemMap.h

include/arch/rm46l8lp/halcogen/adc.h

include/arch/rm46l8lp/halcogen/can.h

include/arch/rm46l8lp/halcogen/crc.h

include/arch/rm46l8lp/halcogen/dcc.h

include/arch/rm46l8lp/halcogen/ecap.h

include/arch/rm46l8lp/halcogen/emac.h

include/arch/rm46l8lp/halcogen/eqep.h

include/arch/rm46l8lp/halcogen/errata_SSWF021_45.h

include/arch/rm46l8lp/halcogen/errata_SSWF021_45_defs.h

include/arch/rm46l8lp/halcogen/esm.h