fbdev: sh_mipi_dsi: add HSxxCLK support

SH MIPI manual explains the calculation method of HBP/HFP.
it is based on HSbyteCLK settings.
SH73a0 chip can use HS6divCLK/HS4divCLK for it.
This patch has compatibility to SH7372 mipi

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
diff --git a/arch/arm/mach-shmobile/board-ap4evb.c b/arch/arm/mach-shmobile/board-ap4evb.c
index 73503ed..904b608 100644
--- a/arch/arm/mach-shmobile/board-ap4evb.c
+++ b/arch/arm/mach-shmobile/board-ap4evb.c
@@ -606,7 +606,8 @@
 	.lcd_chan	= &lcdc_info.ch[0],
 	.lane		= 2,
 	.vsynw_offset	= 17,
-	.flags		= SH_MIPI_DSI_SYNC_PULSES_MODE,
+	.flags		= SH_MIPI_DSI_SYNC_PULSES_MODE |
+			  SH_MIPI_DSI_HSbyteCLK,
 	.set_dot_clock	= sh_mipi_set_dot_clock,
 };