ramips: mt7621: fix error message when initramfs is too large

Signed-off-by: Nikolay Martynov <mar.kolya@gmail.com>

SVN-Revision: 47908

target/linux/ramips/image/Makefile

@@ -1078,7 +1078,7 @@ define Device/ubnt-erx
 				 ubnt-erx-factory-kernel | \
 				 ubnt-erx-factory-rootfs | \
 				 ubnt-erx-factory-version | \
-				 ubnt-erx-factory-check-size $$$$(KERNEL_SIZE)
+				 ubnt-erx-factory-check-size $$(KERNEL_SIZE)
   IMAGE/sysupgrade.tar := sysupgrade-nand
 endef