libcamera: base: Wrap <regex.h>

Provide a wrapper for regex.h to work around the false-positive
compilation errors that crop up in some versions of gcc.

Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Stefan Klug <stefan.klug@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>

src/libcamera/v4l2_subdevice.cpp

@@ -13,17 +13,11 @@
 #include <sys/ioctl.h>
 #include <unistd.h>
 
-#pragma GCC diagnostic push
-#if defined __SANITIZE_ADDRESS__ && defined __OPTIMIZE__
-#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
-#endif
-#include <regex>
-#pragma GCC diagnostic pop
-
 #include <linux/media-bus-format.h>
 #include <linux/v4l2-subdev.h>
 
 #include <libcamera/base/log.h>
+#include <libcamera/base/regex.h>
 #include <libcamera/base/utils.h>
 
 #include <libcamera/geometry.h>