pinctrl: equilibrium: Add missing MODULE_DEVICE_TABLE

pinctrl: equilibrium: Add missing MODULE_DEVICE_TABLE

[ Upstream commit d7f444499d6faf9a6ae3b27ec094109528d2b9a7 ]

This patch adds missing MODULE_DEVICE_TABLE definition which generates
correct modalias for automatic loading of this driver when it is built
as an external module.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Bixuan Cui <cuibixuan@huawei.com>
Link: https://lore.kernel.org/r/20210508031502.53637-1-cuibixuan@huawei.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>