Add bazel-built modules as deps on the system image

These bazel-built modules will be installed into the system image
as part of the bazel rule, rather than going through the make staging
directory.

Bug: 297269187
Test: m bazel_sandwich
Change-Id: I96c6e58f8e0898b2ad92cb7069745ca2059a39f8

android/config.go

@@ -900,6 +900,10 @@ func (c *config) KatiEnabled() bool {
 	return c.katiEnabled
 }
 
+func (c *config) ProductVariables() ProductVariables {
+	return c.productVariables
+}
+
 func (c *config) BuildId() string {
 	return String(c.productVariables.BuildId)
 }