HACK: ti_config_fragments: audio_display: Bump up CMA size support Multimedia

After testing Multi channel test cases on 4K pages it was
discovered the 144MB still was not enough. Increasing
it further to 512MB to align with 8.2 state and tested
Multimedia testcases to be working fine.

Signed-off-by: Prasanth Babu Mantena <p-mantena@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>

ti_config_fragments/audio_display.cfg

@@ -4,7 +4,7 @@
 
 CONFIG_CMA=y
 CONFIG_DMA_CMA=y
-CONFIG_CMA_SIZE_MBYTES=144
+CONFIG_CMA_SIZE_MBYTES=512
 
 # backlight