doc: releases: release-notes: 3.7: support minimum suported CAN bitrates

Add release notes related to the added support for minimum supported CAN
transceiver/controller bitrates.

Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>

doc/releases/release-notes-3.7.rst

@@ -72,6 +72,17 @@ Drivers and Sensors
 
 * CAN
 
+  * Added optional ``min-bitrate`` devicetree property for CAN transceivers.
+  * Added devicetree macros :c:macro:`DT_CAN_TRANSCEIVER_MIN_BITRATE` and
+    :c:macro:`DT_INST_CAN_TRANSCEIVER_MIN_BITRATE` for getting the minimum supported bitrate of a CAN
+    transceiver.
+  * Added support for specifying the minimum bitrate supported by a CAN controller in the internal
+    ``CAN_DT_DRIVER_CONFIG_GET`` and ``CAN_DT_DRIVER_CONFIG_INST_GET`` macros.
+  * Added a new CAN controller API function :c:func:`can_get_min_bitrate` for getting the minimum
+    supported bitrate of a CAN controller/transceiver combination.
+  * Updated the CAN timing functions to take the minimum supported bitrate into consideration when
+    validating the bitrate.
+
 * Clock control
 
 * Counter