Compiler preprocessor symbols

CONFIG_GPIO_AS_PINRESET
FLOAT_ABI_SOFT
NRF52820_XXAA
BOARD_PCA10100
NRF_DFU_SETTINGS_VERSION=2
SVC_INTERFACE_CALL_AS_NORMAL_FUNCTION
DEBUG_NRF
DNRF_DFU_DEBUG_VERSION
NRF_DFU_DEBUG_VERSION=2
__HEAP_SIZE=0
uECC_ENABLE_VLI_API=0
uECC_OPTIMIZATION_LEVEL=3
uECC_SQUARE_FUNC=0
uECC_SUPPORT_COMPRESSED_POINT=0
uECC_VLI_NATIVE_LITTLE_ENDIAN=1

