Install ko to /lib/modules

... not to /lib/module

Bug: 178980227
Test: m
Change-Id: I6a5357e9e83e736181b885b64c76e0b7e5ffadf2
diff --git a/kernel/prebuilt_kernel_modules_test.go b/kernel/prebuilt_kernel_modules_test.go
index b49e167..433548b 100644
--- a/kernel/prebuilt_kernel_modules_test.go
+++ b/kernel/prebuilt_kernel_modules_test.go
@@ -84,12 +84,12 @@
 		})
 
 	expected := []string{
-		"lib/module/5.10/mod1.ko",
-		"lib/module/5.10/mod2.ko",
-		"lib/module/5.10/modules.load",
-		"lib/module/5.10/modules.dep",
-		"lib/module/5.10/modules.softdep",
-		"lib/module/5.10/modules.alias",
+		"lib/modules/5.10/mod1.ko",
+		"lib/modules/5.10/mod2.ko",
+		"lib/modules/5.10/modules.load",
+		"lib/modules/5.10/modules.dep",
+		"lib/modules/5.10/modules.softdep",
+		"lib/modules/5.10/modules.alias",
 	}
 
 	var actual []string