dt-bindings: power: maxim,max17040: Fix incorrect type for 'maxim,rcomp'

The 'maxim,rcomp' is defined as a uint32, but the description and users all
say it is uint8-array with 1 or 2 elements. The tools missed checking this
case.

Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20220107030433.2381616-1-robh@kernel.org