soc: qcom: socinfo: add file with SoC info format version

To ease debugging socinfo driver for newer chips add debugfs file
returning SoC info format version.
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20200525164817.2938638-3-dmitry.baryshkov@linaro.orgSigned-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

drivers/soc/qcom/socinfo.c

@@ -343,6 +343,9 @@ static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
 
 	qcom_socinfo->info.fmt = __le32_to_cpu(info->fmt);
 
+	debugfs_create_x32("info_fmt", 0400, qcom_socinfo->dbg_root,
+			   &qcom_socinfo->info.fmt);
+
 	switch (qcom_socinfo->info.fmt) {
 	case SOCINFO_VERSION(0, 15):
 		qcom_socinfo->info.nmodem_supported = __le32_to_cpu(info->nmodem_supported);