drivers: w1: use select SERIAL in Kconfig for w1-zephyr-serial driver
drivers: w1: use select SERIAL in Kconfig for w1-zephyr-serial driver

Use 'select SERIAL', as a serial driver is supported by practically
all boards, and avoids using extra overlays in samples and tests.

The pattern of using select was introduced for SENSORS in df81fef944,
and the only 1-wire I2C sensor was converted in 465b7615a9.

Signed-off-by: Thomas Stranger <289fb7da2789c69f49f06a4b4e006530cf91f1de@outlook.com>

finikorg/zephyr,galak/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,galak/zephyr,finikorg/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,zephyrproject-rtos/zephyr