Introduce min_sdk_version to deps info.

Bug: 149622332
Test: m
Change-Id: Ie6568cb8a82d5cca9a3dc91b5a068abf4b0632dc
diff --git a/cc/cc.go b/cc/cc.go
index 082816e..49605cc 100644
--- a/cc/cc.go
+++ b/cc/cc.go
@@ -581,6 +581,10 @@
 	return String(c.Properties.Sdk_version)
 }
 
+func (c *Module) MinSdkVersion() string {
+	return String(c.Properties.Min_sdk_version)
+}
+
 func (c *Module) AlwaysSdk() bool {
 	return c.Properties.AlwaysSdk || Bool(c.Properties.Sdk_variant_only)
 }