Makefiles: remove spurious spaces/tabs

fpga/Makefile

@@ -34,6 +34,6 @@ fpga_lf.ngc: fpga_lf.v fpga.ucf xst_lf.scr util.v clk_divider.v lo_edge_detect.v
 help:
 	@echo Multi-OS Makefile, you are running on $(DETECTED_OS)
 	@echo Possible targets:
-	@echo +	all   - Make fpga.bit, the FPGA bitstream 
+	@echo +	all   - Make fpga.bit, the FPGA bitstream
 	@echo +	clean - Clean intermediate files, does not clean fpga.bit
-	
+

fpga/tests/Makefile

@@ -64,7 +64,7 @@ tb_lf_edge_detect: tb_lf_edge_detect.vvp | test_dir
 test_dir:
 	@if [ ! -d $(TEST_OUTDIR) ] ; then mkdir $(TEST_OUTDIR) ; fi
 
-.PHONY: all clean 
+.PHONY: all clean
 
 # $(1) = basename
 # $(2) = extension to check