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/executable_prefer_symlink.mk b/core/executable_prefer_symlink.mk
index 9b9814e..ad6698d 100644
--- a/core/executable_prefer_symlink.mk
+++ b/core/executable_prefer_symlink.mk
@@ -40,7 +40,7 @@
 
 # We need this so that the installed files could be picked up based on the
 # local module name
-ALL_MODULES.$(LOCAL_MODULE).INSTALLED += $(my_symlink)
+ALL_MODULES.$(my_register_name).INSTALLED += $(my_symlink)
 
 # Create the symlink when you run mm/mmm or "make <module_name>"
 $(LOCAL_MODULE) : $(my_symlink)