Support arch-specific init_rc property

Mulitple init_rc files may be necessary to support multilib binaries
with different installed names.

Test: m checkbuild
Change-Id: I17d3a3b2346a25b230e5a325deb0d78f0ee045f0
diff --git a/android/module.go b/android/module.go
index f5adc54..c4e43c2 100644
--- a/android/module.go
+++ b/android/module.go
@@ -625,7 +625,7 @@
 	Native_bridge_supported *bool `android:"arch_variant"`
 
 	// init.rc files to be installed if this module is installed
-	Init_rc []string `android:"path"`
+	Init_rc []string `android:"arch_variant,path"`
 
 	// VINTF manifest fragments to be installed if this module is installed
 	Vintf_fragments []string `android:"path"`