Added EXTRA_ALLOWED_DEPS_TXT to allow arbitrary allowedlist text files that enforces min_sdk_version for apex dependencies to avoid regression

Test: Ran APEX soong tests and manual test
Bug: 333868045

Merged-In: I7b0c7f32687d922dde41150f947c1b993998338f
Change-Id: I7b0c7f32687d922dde41150f947c1b993998338f
diff --git a/android/variable.go b/android/variable.go
index 51a239d..417ba89 100644
--- a/android/variable.go
+++ b/android/variable.go
@@ -523,6 +523,8 @@
 
 	PartitionVarsForSoongMigrationOnlyDoNotUse PartitionVariables
 
+	ExtraAllowedDepsTxt *string `json:",omitempty"`
+
 	AdbKeys *string `json:",omitempty"`
 }