kbuild: Fix calling of make_times_h and gentbl

make did normalize away the "./", so we better put the command
explicitly.

(Geert Uytterhoeven, Adam Richter and others)

drivers/net/hamradio/soundmodem/Makefile

@@ -32,5 +32,5 @@ $(obj)/sm_hapn4800.o:   $(obj)/sm_tbl_hapn4800.h
 $(obj)/sm_fsk9600.o:    $(obj)/sm_tbl_fsk9600.h
 
 $(obj)/sm_tbl_%: $(obj)/gentbl
-	$<
+	$(obj)/gentbl
 

net/khttpd/Makefile

@@ -19,4 +19,4 @@ $(obj)/rfc_time.o: $(obj)/times.h
 # Generated files
 
 $(obj)/times.h: $(obj)/make_times_h
-	$< >$@
+	$(obj)/make_times_h >$@