platform/x86: intel_pmc_ipc: add option to build without ACPI

Introduce a configuration option that allows users to build the
intel_pmc_ipc driver without ACPI support. This is useful for
systems where ACPI is not available or desired.

Based on the discussion from the patch [1], it was necessary to
provide this option to accommodate specific use cases.

Link: https://patchwork.kernel.org/project/netdevbpf/patch/20250227121522.1802832-6-yong.liang.choong@linux.intel.com/#26280764 [1]

Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Co-developed-by: Choong Yong Liang <yong.liang.choong@linux.intel.com>
Signed-off-by: Choong Yong Liang <yong.liang.choong@linux.intel.com>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Link: https://lore.kernel.org/r/20250313085526.1439092-1-yong.liang.choong@linux.intel.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

Author: debox1

include/linux/platform_data/x86/intel_pmc_ipc.h

@@ -36,6 +36,7 @@ struct pmc_ipc_rbuf {
  */
 static inline int intel_pmc_ipc(struct pmc_ipc_cmd *ipc_cmd, struct pmc_ipc_rbuf *rbuf)
 {
+#ifdef CONFIG_ACPI
 	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
 	union acpi_object params[PMC_IPCS_PARAM_COUNT] = {
 		{.type = ACPI_TYPE_INTEGER,},
@@ -89,6 +90,9 @@ static inline int intel_pmc_ipc(struct pmc_ipc_cmd *ipc_cmd, struct pmc_ipc_rbuf
 	}
 
 	return 0;
+#else
+	return -ENODEV;
+#endif /* CONFIG_ACPI */
 }
 
 #endif /* INTEL_PMC_IPC_H */