Revert "Bluetooth: qca: use switch case for soc type behavior"

This reverts commit fc47ed38 which is
commit 691d54d0 upstream.

It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.

Bug: 161946584
Change-Id: I0b3cbead808d92dc25ae36021fd853ed197f15ef
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>