ipa: libipa: Add frame context pointer in process()

Currently we have a single structure of IPAFrameContext but
subsequently, we shall have a ring buffer (or similar) container
to keep IPAFrameContext structures for each frame.

It would be a hassle to query out the frame context required for
process() (since they will reside in a ring buffer) by the IPA
for each process. Hence, prepare the process() libipa template to
accept a particular IPAFrameContext early on.

As for this patch, we shall pass in the pointer as nullptr, so
that the changes compile and keep working as-is.

Signed-off-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

src/ipa/ipu3/algorithms/awb.cpp

@@ -387,7 +387,8 @@ void Awb::calculateWBGains(const ipu3_uapi_stats_3a *stats)
 /**
  * \copydoc libcamera::ipa::Algorithm::process
  */
-void Awb::process(IPAContext &context, const ipu3_uapi_stats_3a *stats)
+void Awb::process(IPAContext &context, [[maybe_unused]] IPAFrameContext *frameContext,
+		  const ipu3_uapi_stats_3a *stats)
 {
 	calculateWBGains(stats);