ACPI / PM: Make suspend_nvs_save() use acpi_os_map_memory()
It turns out that the NVS memory region that suspend_nvs_save() attempts to map has been already mapped by acpi_os_map_memory(), so suspend_nvs_save() should better use acpi_os_map_memory() for mapping memory to avoid conflicts. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
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