serial: sc16is7xx: re-add Kconfig SPI or I2C dependency

Commit d4921643
("serial: sc16is7xx: split into core and I2C/SPI parts (core)")
removed Kconfig SPI_MASTER or I2C dependency for SERIAL_SC16IS7XX (core).
This removal was done because I inadvertently misinterpreted some review
comments.

Because of that, the driver question now pops up if both I2C and
SPI_MASTER are disabled.

Re-add Kconfig SPI_MASTER or I2C dependency to fix the problem.
Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Fixes: d4921643 ("serial: sc16is7xx: split into core and I2C/SPI parts (core)")
Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20240603152601.3689319-3-hugo@hugovil.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/Kconfig

@@ -1025,6 +1025,7 @@ config SERIAL_SCCNXP_CONSOLE
 
 config SERIAL_SC16IS7XX
 	tristate "NXP SC16IS7xx UART support"
+	depends on SPI_MASTER || I2C
 	select SERIAL_CORE
 	select SERIAL_SC16IS7XX_SPI if SPI_MASTER
 	select SERIAL_SC16IS7XX_I2C if I2C