ODROID: debian: add 'nostrip' to build option

Signed-off-by: Dongjin Kim <tobetter@gmail.com>
Change-Id: I1b3271c12b497bf226432f4430f0915bbe570cec
diff --git a/debian/rules b/debian/rules
index 28f2620..f4ccbcd 100755
--- a/debian/rules
+++ b/debian/rules
@@ -1,6 +1,7 @@
 #!/usr/bin/make -f
 
 #export DH_VERBOSE=1
+export DEB_BUILD_OPTIONS=nostrip
 
 override_dh_auto_build:
 	true