NFC: netlink: Rename CMD_FW_UPLOAD to CMD_FW_DOWNLOAD

Loading a firmware into a target is typically called firmware
download, not firmware upload. So we rename the netlink API to
NFC_CMD_FW_DOWNLOAD in order to avoid any terminology confusion from
userspace.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/net/nfc/nfc.h b/net/nfc/nfc.h
index ee85a1f..820a785 100644
--- a/net/nfc/nfc.h
+++ b/net/nfc/nfc.h
@@ -123,10 +123,10 @@
 	class_dev_iter_exit(iter);
 }
 
-int nfc_fw_upload(struct nfc_dev *dev, const char *firmware_name);
-int nfc_genl_fw_upload_done(struct nfc_dev *dev, const char *firmware_name);
+int nfc_fw_download(struct nfc_dev *dev, const char *firmware_name);
+int nfc_genl_fw_download_done(struct nfc_dev *dev, const char *firmware_name);
 
-int nfc_fw_upload_done(struct nfc_dev *dev, const char *firmware_name);
+int nfc_fw_download_done(struct nfc_dev *dev, const char *firmware_name);
 
 int nfc_dev_up(struct nfc_dev *dev);