Fix clock divider for COM57H5M10XRC display.
The previous setting caused flicker.
Tested on Qong (EVBLite with COM57H5M10XRC).
Signed-off-by: Stefano Babic <sbabic@denx.de>
Acked-by: Wolfgang Denk <wd@denx.de>
Acked-by: Anatolij Gustschin <agust@denx.de>
 #define V_END_WIDTH    (7 + 3) /* lower_margin + vsync_len */
 #define SIG_POL                (DI_D3_DRDY_SHARP_POL | DI_D3_CLK_POL)
 #define IF_CONF                0
-#define IF_CLK_DIV     0x175
+#define IF_CLK_DIV     0x55
 #else
 #define XRES           240
 #define YRES           320