OpenSM release notes: Add IS-IV information in qualified devices/firmware

Signed-off-by: Hal Rosenstock <hal.rosenstock@gmail.com>

diff --git a/opensm/doc/opensm_release_notes-3.2.txt b/opensm/doc/opensm_release_notes-3.2.txt
index 21ce2ba..7316765 100644
--- a/opensm/doc/opensm_release_notes-3.2.txt
+++ b/opensm/doc/opensm_release_notes-3.2.txt
@@ -528,6 +528,7 @@ Device                              |   FW versions
 ------------------------------------|-------------------------------
 InfiniScale                         | fw-43132  5.2.000 (and later)
 InfiniScale III                     | fw-47396  0.5.000 (and later)
+InfiniScale IV                      | fw-48436  7.1.000 (and later)
 InfiniHost                          | fw-23108  3.5.000 (and later)
 InfiniHost III Lx                   | fw-25204  1.2.000 (and later)
 InfiniHost III Ex (InfiniHost Mode) | fw-25208  4.8.200 (and later)
