Makefile: fix cleanup

Commit e4943ec5 moved the ARM boards to a vendor directory but forgot
to adapt the cleanup rules in the Makefile

Signed-off-by: Wolfgang Denk <wd@denx.de>

Makefile

@@ -3457,7 +3457,7 @@ clean:
 	@rm -f $(obj)board/cray/L1/{bootscript.c,bootscript.image}	  \
 	       $(obj)board/netstar/{eeprom,crcek,crcit,*.srec,*.bin}	  \
 	       $(obj)board/trab/trab_fkt   $(obj)board/voiceblue/eeprom   \
-	       $(obj)board/{integratorap,integratorcp}/u-boot.lds	  \
+	       $(obj)board/armltd/{integratorap,integratorcp}/u-boot.lds  \
 	       $(obj)board/{bf533-ezkit,bf533-stamp,bf537-stamp,bf561-ezkit}/u-boot.lds \
 	       $(obj)cpu/blackfin/bootrom-asm-offsets.[chs]
 	@rm -f $(obj)include/bmp_logo.h