pipeline: ipa: raspberrypi: Rename IPA Interface namespace to ipa::RPi

Rename the IPA interface namespace to ipa::RPi for consistency with
the libcamera::RPi namespace label.

There is no functional change in this commit.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

include/libcamera/ipa/raspberrypi.mojom

@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 
-module ipa.rpi;
+module ipa.RPi;
 
 import "include/libcamera/ipa/core.mojom";