Add dtc and libufdt prebuilts to dev path

Test: . build/envsetup.sh and lunch
Bug: 37099957
Change-Id: I26e0b78a18ea4b3acdfb4cc64309ace327d29933
diff --git a/envsetup.sh b/envsetup.sh
index ec6c960..55f4983 100644
--- a/envsetup.sh
+++ b/envsetup.sh
@@ -225,6 +225,16 @@
     fi
 
     export ANDROID_DEV_SCRIPTS=$T/development/scripts:$T/prebuilts/devtools/tools:$T/external/selinux/prebuilts/bin
+
+    # add kernel specific binaries
+    case $(uname -s) in
+        Linux)
+            export ANDROID_DEV_SCRIPTS=$ANDROID_DEV_SCRIPTS:$T/prebuilts/misc/linux-x86/dtc:$T/prebuilts/misc/linux-x86/libufdt
+            ;;
+        *)
+            ;;
+    esac
+
     export ANDROID_BUILD_PATHS=$(get_build_var ANDROID_BUILD_PATHS):$ANDROID_TOOLCHAIN:$ANDROID_TOOLCHAIN_2ND_ARCH:$ANDROID_DEV_SCRIPTS:
 
     # If prebuilts/android-emulator/<system>/ exists, prepend it to our PATH