[nrf noup] [zephyr] Fix CHIPDevicePlatformEvent.h include dependencies

Currently the CHIPDevicePlatformEvent depends on the
SystemPacketBuffer which is included in the
CHIPDeviceEvent.h too late.

The problem is silently fixed in the application when the
<platform/PlatformManager.h> include is preceded by other
headers that pull in SystemPacketBuffer.h.

Signed-off-by: Marcin Kajor <marcin.kajor@nordicsemi.no>

src/platform/Zephyr/CHIPDevicePlatformEvent.h

@@ -23,7 +23,7 @@
 
 #pragma once
 
-#include <platform/CHIPDeviceEvent.h>
+#include <system/SystemPacketBuffer.h>
 
 #include <zephyr/bluetooth/bluetooth.h>