ARM: defconfig: Enable intermediate functional block support for sdm429w

Adding intermediate functional block driver
to support data over BT only use case.

Change-Id: Ida06d875aec696084695e02292309d2690d05aef
Signed-off-by: Rajeswari Konda <rajkonda@codeaurora.org>
Signed-off-by: Chandrasekhar Mattaparthy <cmatta@codeaurora.org>