MAINTAINERS/bpf: Update Andrii's entry.

Andrii has been a de-facto maintainer for libbpf and other components.
Update maintainers entry to acknowledge his work de-jure.

The folks with git write permissions will continue to follow the rule
of not applying their own patches unless absolutely trivial.

Signed-off-by: Alexei Starovoitov <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
Acked-by: Andrii Nakryiko <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]

Author: Alexei Starovoitov

MAINTAINERS

@@ -3243,10 +3243,10 @@ F:	drivers/iio/accel/bma400*
 BPF (Safe dynamic programs and tools)
 M:	Alexei Starovoitov <[email protected]>
 M:	Daniel Borkmann <[email protected]>
+M:	Andrii Nakryiko <[email protected]>
 R:	Martin KaFai Lau <[email protected]>
 R:	Song Liu <[email protected]>
 R:	Yonghong Song <[email protected]>
-R:	Andrii Nakryiko <[email protected]>
 R:	John Fastabend <[email protected]>
 R:	KP Singh <[email protected]>
 L:	[email protected]