This is a summary of the most commonly used flags
They are all fairly self-explanatory and organized
They should be placed in the device BoardConfig.mk
All CFLAGS require a _CFLAG += preface to enable

# Standard Board Flags

# Hardware Acceleration
USE_OPENGL_RENDERER := true

# Webkit
TARGET_FORCE_CPU_UPLOAD := true
DYNAMIC_SHARED_LIBV8SO := true
ARCH_ARM_HAVE_VFP := true

# Audio Hardware
BOARD_HAVE_FM_RADIO := true

# Camera
TARGET_USE_CAF_PARAMS := true

# Display
BOARD_EGL_GRALLOC_USAGE_FILTER := true
TARGET_USES_OVERLAY := true
TARGET_USES_GENLOCK := true
TARGET_USES_SF_BYPASS := true
TARGET_HAVE_BYPASS := true
TARGET_GRALLOC_USES_ASHMEM := true
TARGET_USES_C2D_COMPOSITION := true

# Qualcomm Hardware
BOARD_USES_QCOM_HARDWARE := true
BOARD_USES_QCOM_LIBS := true
BOARD_USE_QCOM_PMEM := true
TARGET_QCOM_HDMI_OUT := true

# Qualcomm GPS
BOARD_USES_QCOM_LIBRPC := true
BOARD_USES_QCOM_GPS := true

# Qualcomm Audio
BOARD_USES_QCOM_AUDIO_SPEECH := true
BOARD_USES_QCOM_AUDIO_VOIPMUTE := true
BOARD_USES_QCOM_AUDIO_RESETALL := true

# COMMON_GLOBAL_CFLAGS / BOARD_GLOBAL_CFLAGS

# Hardware Acceleration
-DREFRESH_RATE=60
-DMISSING_EGL_EXTERNAL_IMAGE
-DMISSING_EGL_PIXEL_FORMAT_YV12
-DMISSING_GRALLOC_BUFFERS
-EGL_FORCE_CONFIG=<value>

# Qualcomm Hardware
-DQCOM_HARDWARE

# Display
-DBYPASS_OFFSET

# Camera
-DMISSING_CAM_EXTERNAL_IMAGE

# Audio
-DHAVE_FM_RADIO