firmware: google: cbmem: drop driver owner initialization

Core in coreboot_driver_register() already sets the .owner, so driver
does not need to.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240330-module-owner-coreboot-v1-2-ddba098b6dcf@linaro.org


Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>