ipa: rpi: Fix incorrect cast for ExposureTime ControlInfo

controls::ExposureTime is of type ControlTypeInteger32, but the
default ControlInfoMap casts a value to int64_t causing incorrect
initialisation of the associated ControlInfo.

Fix this by casting correctly to int32_t.

Fixes: 8cebd77 ("ipa: rpi: Apply default ControlInfo values for sensor controls (2)")
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>

src/ipa/rpi/common/ipa_base.cpp

@@ -59,7 +59,7 @@ constexpr Duration controllerMinFrameDuration = 1.0s / 30.0;
 const ControlInfoMap::Map ipaControls{
 	{ &controls::AeEnable, ControlInfo(false, true) },
 	{ &controls::ExposureTime,
-	  ControlInfo(1, 66666, static_cast<int64_t>(defaultExposureTime.get<std::micro>())) },
+	  ControlInfo(1, 66666, static_cast<int32_t>(defaultExposureTime.get<std::micro>())) },
 	{ &controls::AnalogueGain, ControlInfo(1.0f, 16.0f, 1.0f) },
 	{ &controls::AeMeteringMode, ControlInfo(controls::AeMeteringModeValues) },
 	{ &controls::AeConstraintMode, ControlInfo(controls::AeConstraintModeValues) },