device: remove inclusion of pm/device.h

The device PM subsystem _depends_ on device, not vice-versa. Devices
only hold a reference to struct pm_device now, and initialize this
reference with the value provided in Z_DEVICE_DEFINE. This requirement
can be solved with a forward struct declaration, meaning there is no
need to include device PM headers.

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>

drivers/interrupt_controller/intc_ioapic.c

@@ -58,6 +58,7 @@
 #include <toolchain.h>
 #include <linker/sections.h>
 #include <device.h>
+#include <pm/device.h>
 #include <string.h>
 
 #include <drivers/interrupt_controller/ioapic.h> /* public API declarations */

drivers/interrupt_controller/intc_loapic.c

@@ -10,6 +10,7 @@
 #include <kernel.h>
 #include <kernel_structs.h>
 #include <arch/cpu.h>
+#include <pm/device.h>
 #include <zephyr/types.h>
 #include <string.h>
 #include <sys/__assert.h>