ACPI: adjust decl of acpi_set_pdc_bits()

The commit referenced below changed the type of the first parameter.
Misra C:2012 Rule 8.3 requires the declaration to follow suit.

Fixes: bf0cd071db ("xen/pmstat: consolidate code into pmstat.c")
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Nicola Vetrini <nicola.vetrini@bugseng.com>

xen/include/xen/acpi.h

@@ -186,7 +186,7 @@ static inline void acpi_set_csubstate_limit(unsigned int new_limit) { return; }
 #endif
 
 #ifdef XEN_GUEST_HANDLE
-int acpi_set_pdc_bits(uint32_t acpi_id, XEN_GUEST_HANDLE(uint32));
+int acpi_set_pdc_bits(unsigned int acpi_id, XEN_GUEST_HANDLE(uint32));
 #endif
 int arch_acpi_set_pdc_bits(u32 acpi_id, u32 *, u32 mask);