drm/i915: Remove unneeded semicolon

Fixes coccicheck warning:

drivers/gpu/drm/i915/gem/i915_gem_region.c:88:2-3: Unneeded semicolon
drivers/gpu/drm/i915/gvt/gtt.c:1285:2-3: Unneeded semicolon
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Acked-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/1576467845-60920-1-git-send-email-zhengbin13@huawei.com

drivers/gpu/drm/i915/gem/i915_gem_region.c

@@ -85,7 +85,7 @@ i915_gem_object_get_pages_buddy(struct drm_i915_gem_object *obj)
 		}
 
 		prev_end = offset + block_size;
-	};
+	}
 
 	sg_page_sizes |= sg->length;
 	sg_mark_end(sg);

drivers/gpu/drm/i915/gvt/gtt.c

@@ -1282,7 +1282,7 @@ static int ppgtt_populate_shadow_entry(struct intel_vgpu *vgpu,
 		return -EINVAL;
 	default:
 		GEM_BUG_ON(1);
-	};
+	}
 
 	/* direct shadow */
 	ret = intel_gvt_hypervisor_dma_map_guest_page(vgpu, gfn, page_size,