Pinetab1: fix for issues #77 and #78 - makes kernel 6.1 boot on Pinetab early adopter

Made some changes to the pinetab-early-adopter.dts to fix the issues #77 (closed) and #78 (closed) (file attached sun50i-a64-pinetab-early-adopter.dts)

• added node for battery not to flood the log (#78 (closed))
• overwrite the node gpu@1c40000 because something was wrong with _opp_set_regulators (#77 (closed)), the overwrite replaces the opp part.

to fix the system trace (#77 (closed)) change the folowing inside the kernel config (maybe inside this mobian patch

-CONFIG_DRM_PANEL_ILITEK_ILI9881C=y
+CONFIG_DRM_PANEL_ILITEK_ILI9881C=m

that's it.