src: ipa: raspberrypi: Add missing 'cloudy' AWB mode

Support the 'cloudy' AWB mode which was left out when the AwbModeTable
was introduced.

Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

src/ipa/raspberrypi/raspberrypi.cpp

@@ -477,6 +477,7 @@ static const std::map<int32_t, std::string> AwbModeTable = {
 	{ controls::AwbFluorescent, "fluorescent" },
 	{ controls::AwbIndoor, "indoor" },
 	{ controls::AwbDaylight, "daylight" },
+	{ controls::AwbCloudy, "cloudy" },
 	{ controls::AwbCustom, "custom" },
 };