NFC: st-nci: Increase delay between 2 secure element activations

After internal discussion, it appears this timing should be
increased to 20 ms for interoperability reason.

Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

drivers/nfc/st-nci/se.c

@@ -463,7 +463,7 @@ static int st_nci_control_se(struct nci_dev *ndev, u8 se_idx,
 	 */
 	if (info->se_info.se_status->is_ese_present &&
 	    info->se_info.se_status->is_uicc_present)
-		usleep_range(3000, 5000);
+		usleep_range(15000, 20000);
 
 	r = nci_hci_get_param(ndev, NCI_HCI_ADMIN_GATE,
 			NCI_HCI_ADMIN_PARAM_HOST_LIST, &sk_host_list);