Revert "ARM: DaVinci: Change default output volume"

This reverts commit 51a40864.

Reason: rejected upstream by Mark Brown:

Nack.  The setup of the audio routing should be handled by user space on
the system - the default setup is generally taken from hardware.  Most
of the ASoC CODECs are flexible enough to make choosing a default which
makes sense to all systems pretty much impossible, and even within
systems many have sufficient options to mean that something needs to be
worked out dynamically at runtime rather than hard coded into the kernel.

sound/soc/codecs/tlv320aic3x.h

@@ -195,7 +195,7 @@
 #define INVERT_VOL(val)   (0x7f - val)
 
 /* Default output volume (inverted) */
-#define DEFAULT_VOL     INVERT_VOL(0x60)
+#define DEFAULT_VOL     INVERT_VOL(0x50)
 /* Default input volume */
 #define DEFAULT_GAIN    0x20