soc: qcom: socinfo: Add support for new fields in revision 18

Add support for below fields coming in socinfo structure under v18:
* num_kvps: number of key value pairs (KVP)
* kvps_offset: the offset of the KVP table from the base address of
  socinfo structure in SMEM
KVP table has boolean values for certain feature flags, used to determine
hardware configuration.

Signed-off-by: Naman Jain <quic_namajain@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230606134626.18790-2-quic_namajain@quicinc.com

Author: Naman Jain

drivers/soc/qcom/socinfo.c

@@ -565,6 +565,7 @@ static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
 			   &qcom_socinfo->info.fmt);
 
 	switch (qcom_socinfo->info.fmt) {
+	case SOCINFO_VERSION(0, 18):
 	case SOCINFO_VERSION(0, 17):
 		qcom_socinfo->info.oem_variant = __le32_to_cpu(info->oem_variant);
 		debugfs_create_u32("oem_variant", 0444, qcom_socinfo->dbg_root,

include/linux/soc/qcom/socinfo.h

@@ -65,6 +65,9 @@ struct socinfo {
 	__le32  nnum_partname_mapping;
 	/* Version 17 */
 	__le32 oem_variant;
+	/* Version 18 */
+	__le32 num_kvps;
+	__le32 kvps_offset;
 };
 
 #endif