scsi: bfa: Update outdated comment

The function bfa_lps_is_brcd_fabric() was eliminated, being a one-line
function, in commit f7f73812e950 ("[SCSI] bfa: clean up one line
functions"). Replace the call in the comment by its inlined
counterpart, referring to the parameter of the subsequent function.

Signed-off-by: Julia Lawall <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Martin K. Petersen <[e-mail]>

drivers/scsi/bfa/bfa_fcs.c

···
  *         This function should be used only if there is any requirement
 *          to check for FOS version below 6.3.
  *         To check if the attached fabric is a brocade fabric, use
- *         bfa_lps_is_brcd_fabric() which works for FOS versions 6.3
+ *         fabric->lps->brcd_switch which works for FOS versions 6.3
  *         or above only.
  */