iwlwifi: show NVM version in debugfs

Show version number along with dumping NVM data, the version information
being removed from sysfs, add it back to debugfs to help debugging.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlwifi/iwl-debugfs.c

@@ -383,6 +383,7 @@ static ssize_t iwl_dbgfs_nvm_read(struct file *file,
 	int pos = 0, ofs = 0, buf_size = 0;
 	const u8 *ptr;
 	char *buf;
+	u16 eeprom_ver;
 	size_t eeprom_len = priv->cfg->eeprom_size;
 	buf_size = 4 * eeprom_len + 256;
 
@@ -403,9 +404,11 @@ static ssize_t iwl_dbgfs_nvm_read(struct file *file,
 		IWL_ERR(priv, "Can not allocate Buffer\n");
 		return -ENOMEM;
 	}
-	pos += scnprintf(buf + pos, buf_size - pos, "NVM Type: %s\n",
+	eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
+	pos += scnprintf(buf + pos, buf_size - pos, "NVM Type: %s, "
+			"version: 0x%x\n",
 			(priv->nvm_device_type == NVM_DEVICE_TYPE_OTP)
-			? "OTP" : "EEPROM");
+			 ? "OTP" : "EEPROM", eeprom_ver);
 	for (ofs = 0 ; ofs < eeprom_len ; ofs += 16) {
 		pos += scnprintf(buf + pos, buf_size - pos, "0x%.4x ", ofs);
 		hex_dump_to_buffer(ptr + ofs, 16 , 16, 2, buf + pos,