hw/display/sm501: Code style fix

Fix checkpatch warning about multi-line comment.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <8801292992a304609e1eac680fe36b515592b926.1674333199.git.balaton@eik.bme.hu>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>

hw/display/sm501.c

@@ -1768,7 +1768,8 @@ static const GraphicHwOps sm501_ops = {
 static void sm501_reset(SM501State *s)
 {
     s->system_control = 0x00100000; /* 2D engine FIFO empty */
-    /* Bits 17 (SH), 7 (CDR), 6:5 (Test), 2:0 (Bus) are all supposed
+    /*
+     * Bits 17 (SH), 7 (CDR), 6:5 (Test), 2:0 (Bus) are all supposed
      * to be determined at reset by GPIO lines which set config bits.
      * We hardwire them:
      *  SH = 0 : Hitachi Ready Polarity == Active Low