Restrict CFI_INCLUDE_PATHS to Arm64

This CL restricts CFI_INCLUDE_PATHS and PRODUCT_CFI_INCLUDE_PATHS to
Arm64 only.

Bug: 66301104
Test: x86 targets do not respect the include paths variables
Change-Id: I66ec2fb05435535aaf5d59fdfc7a170a4fdd4f26
diff --git a/cc/sanitize.go b/cc/sanitize.go
index 205b2a2..881a5a0 100644
--- a/cc/sanitize.go
+++ b/cc/sanitize.go
@@ -224,8 +224,8 @@
 		}
 	}
 
-	// Enable CFI for all components in the include paths
-	if s.Cfi == nil && ctx.Config().CFIEnabledForPath(ctx.ModuleDir()) {
+	// Enable CFI for all components in the include paths (for Aarch64 only)
+	if s.Cfi == nil && ctx.Config().CFIEnabledForPath(ctx.ModuleDir()) && ctx.Arch().ArchType == android.Arm64 {
 		s.Cfi = boolPtr(true)
 		if inList("cfi", ctx.Config().SanitizeDeviceDiag()) {
 			s.Diag.Cfi = boolPtr(true)