Access ALL_MODULES subvars with my_register_name

ALL_MODULES and subvars are registered with my_register_name.
Replace references of ALL_MODULES.$(LOCAL_MODULE).* with
ALL_MODULES.$(my_register_name).*.

Bug: 155869107
Test: TH presubmit build pass
Test: TH presubmit build noop
Change-Id: I1481c341a285dc04de86619abec3194bb92c9739
diff --git a/core/static_java_library.mk b/core/static_java_library.mk
index 7eef167..81dc2df 100644
--- a/core/static_java_library.mk
+++ b/core/static_java_library.mk
@@ -209,7 +209,7 @@
 	  $(call jar-args-sorted-files-in-directory,$(dir $@)aar)
 
 # Register the aar file.
-ALL_MODULES.$(LOCAL_MODULE).AAR := $(built_aar)
+ALL_MODULES.$(my_register_name).AAR := $(built_aar)
 endif  # need_compile_res
 
 # Reset internal variables.