i2c: muxes: pca954x: Fix broken reset-gpio usage

i2c: muxes: pca954x: Fix broken reset-gpio usage

Revert commit 690de2902dca ("i2c: muxes: pca954x: Use reset controller
only") and its dependent commit 94c296776403 ("i2c: muxes: pca954x:
Reset if (de)select fails") because the first breaks all users of the
driver, by requiring a completely optional reset-gpio driver.  These
commits cause that mux driver simply stops working when optional
reset-gpio is not included, but that reset-gpio is not pulled anyhow.

Driver cannot remove legacy reset-gpios handling.

Fixes: 690de2902dca ("i2c: muxes: pca954x: Use reset controller only")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>