Revert "serial: 8250: Request full 16550A feature probing for OxSemi PCIe devices"

This reverts commit 209a94c5 which is
commit 00b7a4d4 upstream.

It is not needed in Android and it breaks the abi, so it can be
reverted.

Bug: 161946584
Change-Id: I78d46f08529b6e3b84e898dc59ae94ded816a75d
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>