Use -fno-omit-frame-pointer for host windows.

Helps with debugging/profiling.

Bug: http://b/245707217
Change-Id: I6c163c67a04ab53a0b8a00edb233e6d60404f0a4
diff --git a/cc/config/x86_windows_host.go b/cc/config/x86_windows_host.go
index ea7d342..a4d43b9 100644
--- a/cc/config/x86_windows_host.go
+++ b/cc/config/x86_windows_host.go
@@ -47,6 +47,8 @@
 		// Windows flags to generate PDB
 		"-g",
 		"-gcodeview",
+
+		"-fno-omit-frame-pointer",
 	}
 
 	windowsIncludeFlags = []string{