BT : Change fluoride_defaults to qti in BT Stack [2/2]

 - cflags from fluoride.go file is referenced even
   fluoride_qti.go is defined.

 - This patch will rename fluoride_defaults to
   fluoride_defaults_qti in BT stack.

CRs-Fixed: 2446280
Change-Id: I7607ebe56d797e85352c81c1e65c3758c5c5e8d0
5 files changed