qcom_defconfig: enable watchdog command

qcom_defconfig: enable watchdog command

CONFIG_WDT and CONFIG_WDT_QCOM were previously added in
https://source.denx.de/u-boot/u-boot/-/commit/530764de9fc8539cd2354501e9c42804bc4c4dac

U-Boot and Linux pet the watchdog by default,
but it's helpful to also have the command to control the watchdog,
(CONFIG_CMD_WDT)
so it can be manually disabled by the user, for example, if the kernel
is expected to stall during debugging with kgdb.

Signed-off-by: Paul Sajna <sajattack@postmarketos.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20250923-qcom_config_enable_cmd_wdt-v1-1-70cccf9f01e3@postmarketos.org
Signed-off-by: Casey Connolly <kcxt@postmarketos.org>