Exynos 2nd MCPM updates for v3.16

- enable mcpm for dual-cluster exynos5800
 - since commit 166aaf39 ("ARM: 8029/1: mcpm: Rename the
   power_down_finish() functions to be less confusing"),
   use new member name wait_for_cpu_powerdown.
 
 This is based on tags/exynos-mcpm.
 
 Note that since the commit 166aaf39 is in rmk tree so this
 should be sent to upstream after that in 3.16 merge window.
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Merge tag 'exynos-mcpm-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/soc

Merge "Exynos 2nd MCPM updates for v3.16" from Kukjin Kim:

- enable mcpm for dual-cluster exynos5800
- since commit 166aaf39 ("ARM: 8029/1: mcpm: Rename the
  power_down_finish() functions to be less confusing"),
  use new member name wait_for_cpu_powerdown.

This is based on tags/exynos-mcpm.

Note that since the commit 166aaf39 is in rmk tree so this
should be sent to upstream after that in 3.16 merge window.

* tag 'exynos-mcpm-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: EXYNOS: mcpm rename the power_down_finish
  ARM: EXYNOS: Enable mcpm for dual-cluster exynos5800 SoC

Signed-off-by: Olof Johansson <olof@lixom.net>

arch/arm/mach-exynos/mcpm-exynos.c

@@ -235,7 +235,7 @@ static void exynos_power_down(void)
 	/* Not dead at this point?  Let our caller cope. */
 }
 
-static int exynos_power_down_finish(unsigned int cpu, unsigned int cluster)
+static int exynos_wait_for_powerdown(unsigned int cpu, unsigned int cluster)
 {
 	unsigned int tries = 100;
 	unsigned int cpunr = cpu + (cluster * EXYNOS5420_CPUS_PER_CLUSTER);
@@ -261,7 +261,7 @@ static int exynos_power_down_finish(unsigned int cpu, unsigned int cluster)
 static const struct mcpm_platform_ops exynos_power_ops = {
 	.power_up		= exynos_power_up,
 	.power_down		= exynos_power_down,
-	.power_down_finish	= exynos_power_down_finish,
+	.wait_for_powerdown	= exynos_wait_for_powerdown,
 };
 
 static void __init exynos_mcpm_usage_count_init(void)
@@ -290,13 +290,19 @@ static void __naked exynos_pm_power_up_setup(unsigned int affinity_level)
 	"b	cci_enable_port_for_self");
 }
 
+static const struct of_device_id exynos_dt_mcpm_match[] = {
+	{ .compatible = "samsung,exynos5420" },
+	{ .compatible = "samsung,exynos5800" },
+	{},
+};
+
 static int __init exynos_mcpm_init(void)
 {
 	struct device_node *node;
 	void __iomem *ns_sram_base_addr;
 	int ret;
 
-	node = of_find_compatible_node(NULL, NULL, "samsung,exynos5420");
+	node = of_find_matching_node(NULL, exynos_dt_mcpm_match);
 	if (!node)
 		return -ENODEV;
 	of_node_put(node);