Hex to rgb565

[32teeth]

uint16_t util_color_to_rgb565(const char *color)
{
  int red, green, blue;
  sscanf(color, "%02x%02x%02x", &red, &green, &blue);
  return ((red & 0xF8) << 8) | ((green & 0xFC) << 3) | (blue >> 3);
}

adding this to make use of taking string hex to convert to rgb565