staging: rtl8723au: odm.c: Rename BTDM_DisableEDCATurbo() to rtl8723a_BT_disable_EDCA_turbo()

Make it return bool since it only returns true/false, and get rid of

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>