dt-bindings: camera: Update dt string for res-mgr node

Update the res-mgr dtsi string shared-gpios and shared-pinctrl-gpios
to gpios-shared and gpios-shared-pinctrl to avoid predefined
format.

CRs-Fixed: 2804449
Change-Id: Ib6314481950307260c138c3874ba848b02e02fd8