linux-headers: update against 5.10-rc1

commit 3650b228f83adda7e5ee532e2b90429c03f7b9ec

Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
[aw: drop pvrdma_ring.h changes to avoid revert of d73415a31547 ("qemu/atomic.h: rename atomic_ to qatomic_")]
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
diff --git a/linux-headers/linux/mman.h b/linux-headers/linux/mman.h
index 51ea363..434986f 100644
--- a/linux-headers/linux/mman.h
+++ b/linux-headers/linux/mman.h
@@ -27,6 +27,7 @@
 #define MAP_HUGE_SHIFT	HUGETLB_FLAG_ENCODE_SHIFT
 #define MAP_HUGE_MASK	HUGETLB_FLAG_ENCODE_MASK
 
+#define MAP_HUGE_16KB	HUGETLB_FLAG_ENCODE_16KB
 #define MAP_HUGE_64KB	HUGETLB_FLAG_ENCODE_64KB
 #define MAP_HUGE_512KB	HUGETLB_FLAG_ENCODE_512KB
 #define MAP_HUGE_1MB	HUGETLB_FLAG_ENCODE_1MB