libcamera: Standardize on 'const auto'

'const auto' and 'auto const' are interchangeable in C++. There are 446
occurrences of the former in the code base, and 67 occurrences of the
latter. Standardize on the winner.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Barnabás Pőcze <barnabas.pocze@ideasonboard.com>

include/libcamera/base/utils.h

@@ -340,7 +340,7 @@ public:
 	template<typename Period>
 	double get() const
 	{
-		auto const c = std::chrono::duration_cast<std::chrono::duration<double, Period>>(*this);
+		const auto c = std::chrono::duration_cast<std::chrono::duration<double, Period>>(*this);
 		return c.count();
 	}