doc: release-notes: fix typo with i.MX93 board

NXP i.MX93 is A55 not A53.

Signed-off-by: Benjamin Cabé <[email protected]>

Author: kartben

doc/releases/release-notes-3.4.rst

@@ -509,7 +509,7 @@ Boards & SoC Support
 * Added support for these ARM64 boards:
 
   * PHYTEC phyCORE-AM62x A53
-  * MIMX93 EVK A53 (SOF)
+  * NXP i.MX93 EVK A55 (SOF variant)
 
 * Added support for these RISC-V boards: