soc: qcom: ubwc: add missing include

soc: qcom: ubwc: add missing include

The header has a function which calls pr_err(). Don't require users of
the header to include <linux/printk.h> and include it here.

Fixes: 87cfc79dcd60 ("drm/msm/a6xx: Resolve the meaning of UBWC_MODE")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Link: https://lore.kernel.org/r/20260110-iris-ubwc-v1-1-dd70494dcd7b@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>