Added a default to specify an alternative tool chain prefix if needed.

# will be added to LOCAL_CFLAGS when building the module.

#DEBUG_MODULE_ModuleName:=true

# Specify an alternative tool chain prefix if needed.

#TARGET_TOOLS_PREFIX:=

# Specify the extra CFLAGS to use when building a module whose

# DEBUG_MODULE_ variable is set.  Host and device flags are handled

# separately.