Move api.xml from tools/ to platform-tools/

The API database was generated with code in sdk/apicheck/.

Change-Id: I42559fb47716f8ea2ee2d836375b523644dfe41c
diff --git a/sdk/plat_tools_source.properties b/sdk/plat_tools_source.properties
index 3da9448..488c0d5 100644
--- a/sdk/plat_tools_source.properties
+++ b/sdk/plat_tools_source.properties
@@ -1,2 +1,2 @@
 Pkg.UserSrc=false
-Pkg.Revision=10
\ No newline at end of file
+Pkg.Revision=11
\ No newline at end of file