Fix 1806 build error.

Change-Id: I08c1bf4a8184e0dc60273e3113292480599a2772
diff --git a/build.sh b/build.sh
index 4d5117c..b5c78af 100755
--- a/build.sh
+++ b/build.sh
@@ -12,9 +12,9 @@
 
 grep "url" ../.git/config | cut -d " " -f 3 | grep "kernel_5.4.195"
 if [ $? -eq "0" ]; then
-	export BUILD_PLATFORM=gcc-8.4
+	export BUILD_PLATFORM=asr1806
 else
-	export BUILD_PLATFORM=gcc-4.9
+	export BUILD_PLATFORM=asr1803
 fi
 
 ROOT_DIR=`pwd`