pinctrl: samsung: Add Exynos850 SoC specific data

Add Samsung Exynos850 SoC specific data to enable pinctrl support for
all platforms based on Exynos850.

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Link: https://lore.kernel.org/r/20210811114827.27322-3-semen.protsenko@linaro.org
[krzysztof: lower-case the hex-numbers]
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>