drm/msm/adreno: a5xx_power: Don't apply A540 lm_setup to other GPUs

While passing the A530-specific lm_setup func to A530 and A540
to !A530 was fine back when only these two were supported, it
certainly is not a good idea to send A540 specifics to smaller
GPUs like A508 and friends.
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>

drivers/gpu/drm/msm/adreno/a5xx_power.c

@@ -304,7 +304,7 @@ int a5xx_power_init(struct msm_gpu *gpu)
 	/* Set up the limits management */
 	if (adreno_is_a530(adreno_gpu))
 		a530_lm_setup(gpu);
-	else
+	else if (adreno_is_a540(adreno_gpu))
 		a540_lm_setup(gpu);
 
 	/* Set up SP/TP power collpase */