Add "-Z debug-info-for-profiling" flag for AutoFDO

Test: presubmit
Bug: 195134194
Change-Id: I0133ce99e2d5f415e553f7ae8e2ff93c739d6a32
diff --git a/rust/config/global.go b/rust/config/global.go
index 78c8dae..23384e5 100644
--- a/rust/config/global.go
+++ b/rust/config/global.go
@@ -55,6 +55,8 @@
 	deviceGlobalRustFlags = []string{
 		"-C panic=abort",
 		"-Z link-native-libraries=no",
+		// Generate additional debug info for AutoFDO
+		"-Z debug-info-for-profiling",
 	}
 
 	deviceGlobalLinkFlags = []string{