memory: tegra264: drop redundant tegra264_mc_icc_aggregate()

tegra264_mc_icc_aggregate() does nothing on top of icc_std_aggregate
except an early return on !mc->bwmgr_mrq_supported.
tegra264_mc_icc_set() already returns early on the same condition,
before reading any of the aggregated avg_bw / peak_bw values.  This
makes the early return in aggregate() redundant.  So, set
tegra264_mc_icc_ops.aggregate to icc_std_aggregate and drop the
helper.

Reported-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://patch.msgid.link/20260527140127.49172-3-sumitg@nvidia.com
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>