linux: add blank line before function declaration

Also delete unnecessary blank line before #endif.

Signed-off-by: Tokunori Ikegami <[email protected]>

Author: ikegami-t

src/nvme/linux.h

@@ -474,6 +474,7 @@ unsigned char *nvme_import_tls_key_versioned(const char *encoded_key,
 					     unsigned char *version,
 					     unsigned char *hmac,
 					     size_t *key_len);
+
 /**
  * nvme_submit_passthru - Low level ioctl wrapper for passthru commands
  * @fd:		File descriptor of the nvme device
@@ -508,5 +509,4 @@ __attribute__((weak))
 int nvme_submit_passthru64(int fd, unsigned long ioctl_cmd,
 			   struct nvme_passthru_cmd64 *cmd,
 			   __u64 *result);
-
 #endif /* _LIBNVME_LINUX_H */