ARM: dts: am335x-pepper: Fix the audio CODEC's reset pin

[ Upstream commit e153db03c6b7a035c797bcdf35262586f003ee93 ]

The correct DT property for specifying a GPIO used for reset
is "reset-gpios", fix this here.

Fixes: 4341881d ("ARM: dts: Add devicetree for Gumstix Pepper board")

Signed-off-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>