ARM: dts: am335x-evm: Correct the regulators for the audio codec

commit 4f96dc0a upstream.

Correctly map the regulators used by tlv320aic3106.
Both 1.8V and 3.3V for the codec is derived from VBAT via fixed regulators.

Cc: <Stable@vger.kernel.org> # v4.14+
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>