arm64: dts: imx8mq-librem5-devkit: Use 0.9V for VDD_GPU

According to the imx8mq data sheet running VDD_GPU at 0.9V is enough
when not overclocking to 1GHz (which we currently don't do).

Signed-off-by: Guido Günther <guido.gunther@puri.sm>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
1 file changed