Statements in build system such as ifeq (true,$(LOCAL_VENDOR_MODULE)) has a poor compatibility

We have developed a vendor module and set LOCAL_VENDOR_MODULE := true<space> (Added a space character at the end)
The android build system then can't installed it in the right partition until we removed the extra space character.

bug: 129725067

Change-Id: I081ffe7f39a9c850007ba304c815436500be694c