On AM62a SoCs the AUDIO_REFCLKx clocks can be used as an input to
external peripherals when configured through CTRL_MMR, so add the
clock nodes.

Based on: Link: https://lore.kernel.org/lkml/20230807202159.13095-2-francesco@dolcini.it/Signed-off-by: Garrett Giordano <ggiordano@phytec.com>
Link: https://lore.kernel.org/r/20240626155244.3311436-1-ggiordano@phytec.comSigned-off-by: Vignesh Raghavendra <vigneshr@ti.com>