tools headers UAPI: sync linux/fs.h with kernel

JIRA: https://issues.redhat.com/browse/RHEL-29796
Upstream Status: RHEL only

description
===========
Upstream, when there is a change in a header file from the specific set
of headers (listed in tools/perf/check-headers.sh), it is accompanied by
a commit that brings the same change into its counterpart located in
tools/include. Usually several changes are squashed together. We cannot
easily follow this strategy, since we not always take all the commits
squashed together.

In order to tidy tools/include up, we need to sync the headers manually.

Signed-off-by: Michael Petlan <mpetlan@redhat.com>

Author: rfmvh

tools/perf/trace/beauty/include/uapi/linux/fs.h

@@ -301,8 +301,12 @@ typedef int __bitwise __kernel_rwf_t;
 /* per-IO O_APPEND */
 #define RWF_APPEND	((__force __kernel_rwf_t)0x00000010)
 
+/* Atomic Write */
+#define RWF_ATOMIC	((__force __kernel_rwf_t)0x00000040)
+
+
 /* mask of flags supported by the kernel */
 #define RWF_SUPPORTED	(RWF_HIPRI | RWF_DSYNC | RWF_SYNC | RWF_NOWAIT |\
-			 RWF_APPEND)
+			 RWF_APPEND | RWF_ATOMIC)
 
 #endif /* _UAPI_LINUX_FS_H */