drm/msm/adreno: make adreno_is_a690()'s argument const

Change adreno_is_a690() prototype to accept the const struct adreno_gpu
pointer instead of a non-const one. This fixes the following warning:

In file included from drivers/gpu/drm/msm/msm_drv.c:33:
drivers/gpu/drm/msm/adreno/adreno_gpu.h: In function ‘adreno_is_a660_family’:
drivers/gpu/drm/msm/adreno/adreno_gpu.h:303:54: warning: passing argument 1 of ‘adreno_is_a690’ discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
  303 |         return adreno_is_a660(gpu) || adreno_is_a690(gpu) || adreno_is_7c3(gpu);

Fixes: 1b90e8f8 ("drm/msm/adreno: change adreno_is_* functions to accept const argument")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/542138/
Link: https://lore.kernel.org/r/20230612182527.3345786-1-dmitry.baryshkov@linaro.org

drivers/gpu/drm/msm/adreno/adreno_gpu.h

@@ -284,7 +284,7 @@ static inline int adreno_is_a660(const struct adreno_gpu *gpu)
 	return adreno_is_revn(gpu, 660);
 }
 
-static inline int adreno_is_a690(struct adreno_gpu *gpu)
+static inline int adreno_is_a690(const struct adreno_gpu *gpu)
 {
 	return gpu->revn == 690;
 };