[DO NOT MERGE] Switch to clang-4691093

Test: Build/boot marlin, sailfish, x86/arm/arm64 emulators
Bug: 68397894
Change-Id: Ic255b0b578838786f2bf54b53831f151187eaab0
diff --git a/cc/config/global.go b/cc/config/global.go
index 5e5d457..7df5de4 100644
--- a/cc/config/global.go
+++ b/cc/config/global.go
@@ -116,8 +116,8 @@
 
 	// prebuilts/clang default settings.
 	ClangDefaultBase         = "prebuilts/clang/host"
-	ClangDefaultVersion      = "clang-4639204"
-	ClangDefaultShortVersion = "6.0.1"
+	ClangDefaultVersion      = "clang-4691093"
+	ClangDefaultShortVersion = "6.0.2"
 
 	// Directories with warnings from Android.bp files.
 	WarningAllowedProjects = []string{