Use /sbin/depmod instead of SDK depmod.

Change-Id: I819e1a2f3b3102963183619584b58d4bc9ae853c
diff --git a/Makefile b/Makefile
index 943d248..1ea5bff 100644
--- a/Makefile
+++ b/Makefile
@@ -338,7 +338,7 @@
 AWK		= awk
 GENKSYMS	= scripts/genksyms/genksyms
 INSTALLKERNEL  := installkernel
-DEPMOD		= ../host/utilities/depmod
+DEPMOD		= /sbin/depmod
 KALLSYMS	= scripts/kallsyms
 PERL		= perl
 CHECK		= sparse