Samsung mach/soc changes for v4.17, part two

1. Fix coupled CPU idle freeze on Exynos4210.
 2. Simplify hot-path in coupled CPU idle.
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Merge tag 'samsung-soc-4.17-2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/krzk/linux into next/soc

Pull "Samsung mach/soc changes for v4.17, part two" from Krzysztof Kozłowski:

1. Fix coupled CPU idle freeze on Exynos4210.
2. Simplify hot-path in coupled CPU idle.

* tag 'samsung-soc-4.17-2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
  ARM: EXYNOS: Simplify code in coupled CPU idle hot path
  ARM: EXYNOS: Fix coupled CPU idle freeze on Exynos4210

arch/arm/mach-exynos/pm.c

@@ -163,7 +163,7 @@ void exynos_enter_aftr(void)
 
 	exynos_pm_central_suspend();
 
-	if (of_machine_is_compatible("samsung,exynos4412")) {
+	if (soc_is_exynos4412()) {
 		/* Setting SEQ_OPTION register */
 		pmu_raw_writel(S5P_USE_STANDBY_WFI0 | S5P_USE_STANDBY_WFE0,
 			       S5P_CENTRAL_SEQ_OPTION);
@@ -271,11 +271,7 @@ abort:
 				goto fail;
 
 			call_firmware_op(cpu_boot, 1);
-
-			if (soc_is_exynos3250())
-				dsb_sev();
-			else
-				arch_send_wakeup_ipi_mask(cpumask_of(1));
+			dsb_sev();
 		}
 	}
 fail: