libcamera: base: shared_fd: Rename fd() to get()

For consistency with UniqueFD, rename the fd() function to get().
Renaming UniqueFD::get() to fd() would have been another option, but was
rejected to keep as close as possible to the std::shared_ptr<> and
std::unique_ptr<> APIs.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>

include/libcamera/base/shared_fd.h

@@ -27,7 +27,7 @@ public:
 	SharedFD &operator=(SharedFD &&other);
 
 	bool isValid() const { return fd_ != nullptr; }
-	int fd() const { return fd_ ? fd_->fd() : -1; }
+	int get() const { return fd_ ? fd_->fd() : -1; }
 	UniqueFD dup() const;
 
 private:

include/libcamera/internal/v4l2_videodevice.h

@@ -140,7 +140,7 @@ private:
 	private:
 		struct Plane {
 			Plane(const FrameBuffer::Plane &plane)
-				: fd(plane.fd.fd()), length(plane.length)
+				: fd(plane.fd.get()), length(plane.length)
 			{
 			}