tty: serial: pl011: remove incorrect of_match_ptr annotation

tty: serial: pl011: remove incorrect of_match_ptr annotation

Building with W=1 shows a warning about sbsa_uart_of_match being unused when
CONFIG_OF is disabled:

    drivers/tty/serial/amba-pl011.c:2945:34: error: unused variable 'sbsa_uart_of_match' [-Werror,-Wunused-const-variable]

The driver is not actually used on any machines that are built
with CONFIG_OF disabled, so using of_match_ptr() won't save any
actual memory, and it can be best removed.

The corresponding ACPI_PTR() annotation does save a few bytes on
32-bit arm since CONFIG_ACPI is not available, but for consistency
it seems better to remove both along with the __maybe_unused
annotation on the ACPI table.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20250225163556.4169086-1-arnd@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>