Add manifest for gtaxlwifi (Samsung Galaxy Tab)

<?xml version="1.0" encoding="UTF-8"?>

<manifest>

	<project path="device/samsung/gtaxlwifi" name="Valera1978/android_device_samsung_gtaxlwifi" />

	<project path="kernel/samsung/exynos7870" name="android_kernel_samsung_exynos7870" />

	<project path="vendor/samsung/gtaxlwifi" name="Valera1978/android_vendor_samsung_gtaxlwifi" />

</manifest>