cpuidle: Adjust includes to remove of_device.h

Now that of_cpu_device_node_get() is defined in of.h, of_device.h is just
implicitly including other includes, and is no longer needed. Adjust the
include files with what was implicitly included by of_device.h (cpu.h,
cpuhotplug.h, of.h, and of_platform.h) and drop including of_device.h.

Acked-by: Anup Patel <anup@brainfault.org>
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Link: https://lore.kernel.org/r/20230329-dt-cpu-header-cleanups-v1-16-581e2605fe47@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>

drivers/cpuidle/cpuidle-psci.c

@@ -16,7 +16,6 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/psci.h>
 #include <linux/pm_domain.h>

drivers/cpuidle/cpuidle-qcom-spm.c

@@ -11,8 +11,7 @@
 #include <linux/io.h>
 #include <linux/slab.h>
 #include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/of_device.h>
+#include <linux/of_platform.h>
 #include <linux/err.h>
 #include <linux/platform_device.h>
 #include <linux/cpuidle.h>

drivers/cpuidle/cpuidle-riscv-sbi.c

@@ -8,6 +8,7 @@
 
 #define pr_fmt(fmt) "cpuidle-riscv-sbi: " fmt
 
+#include <linux/cpuhotplug.h>
 #include <linux/cpuidle.h>
 #include <linux/cpumask.h>
 #include <linux/cpu_pm.h>
@@ -15,7 +16,6 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/slab.h>
 #include <linux/platform_device.h>
 #include <linux/pm_domain.h>

drivers/cpuidle/dt_idle_states.c

@@ -14,7 +14,6 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/of.h>
-#include <linux/of_device.h>
 
 #include "dt_idle_states.h"