docs(linux): AM64X: Update Release Notes

Issue Tracker Update containing details of ICSSG
firmware related bugs resolved and bugs open.
Adds new PRP feature in What's New section

Signed-off-by: Himanshu Mittal <h-mittal1@ti.com>

Author: hm-ti

source/devices/AM64X/linux/Release_Specific_Release_Notes.rst

@@ -50,6 +50,9 @@ What's new
   - Important Bug Fixes on top of Processor SDK 10.01.10.04 Release
   - Review Issue Tracker Section for the new fixes.
 
+- PRP Offload support has been added to ICSSG prueth-driver. Now PRP functionality
+  can be offloaded to ICSSG hardware, saving CPU cycles.
+
 **Key Release References:**
 
   - RT Kernel : Real-Time Linux Interrupt Latency numbers here - :ref:`RT Interrupt Latencies <RT-linux-performance>`
@@ -196,6 +199,12 @@ Issues Resolved
    "EXT_EP-12337","ICSSG: TAPRIO - Firmware can’t handle base-time which is not a multiple of cycle-time."
    "EXT_EP-12338","ICSSG: PA_STATS are not sequenced properly"
    "EXT_EP-12339","Switch/MAC/HSR firmware does not drop corrupted packets"
+   "EXTSYNC-5683","Non-recoverable TX underflow with Bidirectional traffic in 100M MII mode"
+   "EXTSYNC-5685","Packets reception failure: 10Mbps speed"
+   "EXTSYNC-5686","PRU - Task Manager disable during firmware init"
+   "EXTSYNC-5687","Local injection (TX) - Transmission failure due "TX Pkt not available""
+   "EXTSYNC-5317","Last 1B of payload missing in forwarding scenario ("Case-3")"
+   "EXTSYNC-5686","PRU - Task Manager disable during firmware init"
 
 
 Issues Open