drivers/ipmi: Add uid parameter to struct drivers_ipmi_config

This change adds uid parameter to drivers_ipmi_config that can be used
by ipmi_ssdt() to store the uid value to be used by
ipmi_write_acpi_tables. This allows to remove the requirement in
ipmi_ssdt() to update dev->command. This is being done in preparation
to make the struct device * parameter to fill_ssdt as const.

Change-Id: Ieb41771c75aae902191bba5d220796e6c343f8e0
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40705
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/drivers/ipmi/ipmi_kcs_ops.c b/src/drivers/ipmi/ipmi_kcs_ops.c
index 043616a..349abbc 100644
--- a/src/drivers/ipmi/ipmi_kcs_ops.c
+++ b/src/drivers/ipmi/ipmi_kcs_ops.c
@@ -212,7 +212,7 @@
 	acpi_create_ipmi(dev, spmi, (ipmi_revision_major << 8) |
 			 (ipmi_revision_minor << 4), &addr,
 			 IPMI_INTERFACE_KCS, gpe_interrupt, apic_interrupt,
-			 dev->command);
+			 conf->uid);
 
 	acpi_add_table(rsdp, spmi);
 
@@ -236,14 +236,14 @@
 		conf = dev->chip_info;
 
 	/* Use command to pass UID to ipmi_write_acpi_tables */
-	dev->command = uid_cnt++;
+	conf->uid = uid_cnt++;
 
 	/* write SPMI device */
 	acpigen_write_scope(scope);
 	acpigen_write_device("SPMI");
 	acpigen_write_name_string("_HID", "IPI0001");
 	acpigen_write_name_unicode("_STR", "IPMI_KCS");
-	acpigen_write_name_byte("_UID", dev->command);
+	acpigen_write_name_byte("_UID", conf->uid);
 	acpigen_write_STA(0xf);
 	acpigen_write_name("_CRS");
 	acpigen_write_resourcetemplate_header();