ARM: dts: am335x-sl50: Add Toby-Churchill SL50 board support.

Add support for Lightwriter SL50 series board, a small, robust and portable
Voice Output Communication Aids (VOCA) designed to meet the particular and
changing needs of people with speech loss resulting from a wide range of
acquired, progressive and congenital conditions.
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Reviewed-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: Andy Simpkins <andy.simpkins@toby-churchill.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/Makefile

@@ -411,6 +411,7 @@ dtb-$(CONFIG_SOC_AM33XX) += \
 	am335x-base0033.dtb \
 	am335x-bone.dtb \
 	am335x-boneblack.dtb \
+	am335x-sl50.dtb \
 	am335x-evm.dtb \
 	am335x-evmsk.dtb \
 	am335x-nano.dtb \