avfilter/unsharp: use AV_OPT_TYPE_BOOL for opencl option

libavfilter/vf_unsharp.c

@@ -276,7 +276,7 @@ static const AVOption unsharp_options[] = {
     { "cy",             "set chroma matrix vertical size",   OFFSET(cmsize_y), AV_OPT_TYPE_INT,   { .i64 = 5 }, MIN_SIZE, MAX_SIZE, FLAGS },
     { "chroma_amount",  "set chroma effect strength",        OFFSET(camount),  AV_OPT_TYPE_FLOAT, { .dbl = 0 },       -2,        5, FLAGS },
     { "ca",             "set chroma effect strength",        OFFSET(camount),  AV_OPT_TYPE_FLOAT, { .dbl = 0 },       -2,        5, FLAGS },
-    { "opencl",         "use OpenCL filtering capabilities", OFFSET(opencl), AV_OPT_TYPE_INT, { .i64 = 0 },        0,        1, FLAGS },
+    { "opencl",         "use OpenCL filtering capabilities", OFFSET(opencl),   AV_OPT_TYPE_BOOL,  { .i64 = 0 },        0,        1, FLAGS },
     { NULL }
 };