kernel: refresh backport-5.15 patches

Refresh patches, removing unwanted git metadata from some backported
commits.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

target/linux/generic/backport-5.15/600-v5.18-page_pool-Add-allocation-stats.patch

@@ -29,8 +29,6 @@ Signed-off-by: David S. Miller <davem@davemloft.net>
  net/core/page_pool.c    | 24 ++++++++++++++++++++----
  3 files changed, 51 insertions(+), 4 deletions(-)
 
-diff --git a/include/net/page_pool.h b/include/net/page_pool.h
-index 97c3c19872ff..1f27e8a48830 100644
 --- a/include/net/page_pool.h
 +++ b/include/net/page_pool.h
 @@ -82,6 +82,19 @@ struct page_pool_params {