UPSTREAM: serial: qcom-geni: fix console shutdown hang

A recent commit added back the calls top stop tx and rx to shutdown()
which had previously been removed by commit e8376633 ("tty: serial:
qcom_geni_serial: No need to stop tx/rx on UART shutdown") in order to
be able to use kgdb after stopping the getty.

Not only did this again break kgdb, but it also broke serial consoles
more generally by hanging TX when stopping the getty during reboot.

The underlying problem has been there since the driver was first merged
and fixing it is going to be a bit involved so simply stop calling the
broken stop functions during shutdown for consoles for now.

Fixes: d8aca2f9 ("tty: serial: qcom-geni-serial: stop operations in progress at shutdown")
Cc: stable <stable@kernel.org>
Cc: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
Tested-by: Andrew Halaney <ahalaney@redhat.com> # sa8540p-ride
Link: https://lore.kernel.org/r/20230307164405.14218-2-johan+linaro@kernel.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Bug: 370629635
Bug: 375550406
Change-Id: Ib532b26b318d720f74e02543e74fa26775ad4c4a
(cherry picked from commit 9aff74cc)
Signed-off-by: Praveen Talari <quic_ptalari@quicinc.com>
(cherry picked from commit 6e8e3e96743a493b37be5888f43416191076be7c)