artik053: enable CONFIG_S5J_WATCHDOG by default in securitytest
artik053: enable CONFIG_S5J_WATCHDOG by default in securitytest

This patch enables CONFIG_S5J_WATCHDOG in securitytest.

Change-Id: I5a46c8b4fb1489804f96cb50dd4c739eda1f602f
Signed-off-by: Junhwan Park <junhwan.park@samsung.com>

Conflicts:
	build/configs/artik053/securitytest/defconfig

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