arm64: defconfig: Enable Qualcomm watchdog driver

Enable the driver for the watchdog found in the application processor
subsystem on most modern Qualcomm platforms.
Tested-by: NVinod Koul <vkoul@kernel.org>
Reviewed-by: NVinod Koul <vkoul@kernel.org>
Signed-off-by: NBjorn Andersson <bjorn.andersson@linaro.org>

arch/arm64/configs/defconfig

@@ -461,6 +461,7 @@ CONFIG_IMX2_WDT=y
 CONFIG_IMX_SC_WDT=m
 CONFIG_MESON_GXBB_WATCHDOG=m
 CONFIG_MESON_WATCHDOG=m
+CONFIG_QCOM_WDT=m
 CONFIG_RENESAS_WDT=y
 CONFIG_UNIPHIER_WATCHDOG=y
 CONFIG_BCM2835_WDT=y