arm64: dts: exynos: Use newer S3FWRN5 GPIO properties in Exynos5433 TM2

Since "s3fwrn5" is not a valid vendor prefix, use new GPIO properties
instead of the deprecated.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>