ARM: dts: omap3-gta04: fix compatible record for GTA04 board

Vendor of the GTA04 boards is and always was
Golden Delicious Computers GmbH&Co. KG, Germany
and not Texas Instruments.

Maybe, TI was references here because the GTA04 was based on
the BeagleBoard design which is designated as "ti,omap3-beagle".

While we are looking at vendors of omap3 based devices, we also
add the record for OpenPandora. The DTS files for the pandora
device already make use of it.

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Message-Id: <38b49aad0cf33bb5d6a511edb458139b58e367fd.1676566002.git.hns@goldelico.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>