ti-ipc: am62axx: Update c7x IPC firmware

Update Inter Processor Communication (IPC) firmwares for am62ax
C7X from the Firmware Builder SDK version 08.06.00.02

Major updates
 - Build from 08.06.00.02 version of SDK.

MD5 Checksum:
62465a503785bc0ce6e6796eb398307f  ti-ipc/am62axx/ipc_echo_test_c7x_1_release_strip.xe71

Signed-off-by: Venkatesan Krishnamoorthy <v-krishnamoorthy@ti.com>