soc: samsung: exynos-pmu: Add Exynos850 support

Exynos850 SoC can reuse PMU driver functionality. Add corresponding
compatible string.

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Link: https://lore.kernel.org/r/20211028144313.9444-2-semen.protsenko@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>

drivers/soc/samsung/exynos-pmu.c

@@ -94,6 +94,8 @@ static const struct of_device_id exynos_pmu_of_device_ids[] = {
 		.compatible = "samsung,exynos5433-pmu",
 	}, {
 		.compatible = "samsung,exynos7-pmu",
+	}, {
+		.compatible = "samsung,exynos850-pmu",
 	},
 	{ /*sentinel*/ },
 };