ARM: dts: stm32: YAML validation fails for Odyssey Boards

ARM: dts: stm32: YAML validation fails for Odyssey Boards

[ Upstream commit 84a34e1862aae43e4dcdfb743a7dd3ade1fe4a3c ]

"make dtbs_check" gives following output :
stm32mp157c-odyssey.dt.yaml: gpu@59000000: 'contiguous-area' does not match
any of the regexes: 'pinctrl-[0-9]+'
From schema: Documentation/devicetree/bindings/gpu/vivante,gc.yaml

Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@foss.st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>
Stable-dep-of: 966f04a89d77 ("ARM: dts: stm32: Add missing detach mailbox for Odyssey SoM")
Signed-off-by: Sasha Levin <sashal@kernel.org>