[nrf noup] boot: zephyr: Replace haltium header includes with soc-specific headers

Replace includes of removed common haltium_pm_s2ram.h and
haltium_power.h headers with the per-SoC series soc_pm_s2ram.h
and soc_power.h equivalents introduced in the Zephyr SoC layer.

Signed-off-by: Jakub Zymelka <jakub.zymelka@nordicsemi.no>

Author: jaz1-nordic

boot/zephyr/nrf54h20_custom_s2ram.c

@@ -6,8 +6,8 @@
 #include <stdbool.h>
 #include <zephyr/arch/common/pm_s2ram.h>
 #include <hal/nrf_resetinfo.h>
-#include "haltium_pm_s2ram.h"
-#include "haltium_power.h"
+#include "soc_pm_s2ram.h"
+#include "soc_power.h"
 
 #include <zephyr/devicetree.h>
 #include <zephyr/storage/flash_map.h>