Import make variable NextReleaseHideFlaggedApi to Soong

This change imports NextReleaseHideFlaggedApi exported from soong_config

Test: m nothing
Bug: 299570421
Change-Id: I410596a39d2ba9ad353c5cf48bd38b1e843633b2
diff --git a/android/config.go b/android/config.go
index f9d616d..b3ff86b 100644
--- a/android/config.go
+++ b/android/config.go
@@ -2080,3 +2080,7 @@
 func (c *deviceConfig) CheckVendorSeappViolations() bool {
 	return Bool(c.config.productVariables.CheckVendorSeappViolations)
 }
+
+func (c *deviceConfig) NextReleaseHideFlaggedApi() bool {
+	return Bool(c.config.productVariables.NextReleaseHideFlaggedApi)
+}