makefile: include DEFINES_L in CFLAGS_L

Not sure how this slipped through the cracks…

Signed-off-by: Steven Noonan <steven@uplinklabs.net>

Created by  Steven Noonan  on October 13, 2009
23STQ7UA5FV5FQREV4NYIWNKYVCIPRL3AQLB7QN7GVHWTPJ7VJ4QC
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