organize scripts with per-version sections to avoid merge conflicts

Change-Id: I294ef390c6e1684e3e27ffe56fcc0e2d0c8152c4
diff --git a/self-extractors/generate-packages.sh b/self-extractors/generate-packages.sh
index faeb3df..80ce27e 100755
--- a/self-extractors/generate-packages.sh
+++ b/self-extractors/generate-packages.sh
@@ -23,8 +23,13 @@
 # 239410 = IML74K
 # 262866 = IMM30D
 # 299849 = IMM76D
-ZIP=trygon-ota-299849.zip
-BUILD=imm76d
+# end ics-mr1
+BRANCH=ics-mr1
+if test $BRANCH=ics-mr1
+then
+  ZIP=trygon-ota-299849.zip
+  BUILD=imm76d
+fi
 ROOTDEVICE=stingray
 DEVICE=stingray
 MANUFACTURER=moto