[LLVM] Update BPF maintainer (#120429)

Nowadays yonghong-song and eddyz87 are more involved with LLVM
BPF development than 4ast, so update the maintainer list to reflect
this.

Author: nikic

llvm/Maintainers.md

@@ -188,8 +188,10 @@ Ben Shi \
 
 #### BPF backend
 
-Alexei Starovoitov \
-[email protected] (email), [4ast](https://github.com/4ast) (GitHub)
+Yonghong Song \
+[email protected] (email), [yonghong-song](https://github.com/yonghong-song) (GitHub) \
+Eduard Zingerman \
+[email protected] (email), [eddyz87](https://github.com/eddyz87) (GitHub)
 
 #### CSKY backend
 
@@ -461,6 +463,7 @@ Anton Korobeynikov ([email protected], [asl](https://github.com/asl)) -- A
 Chad Rosier ([email protected]) -- FastISel \
 Hans Wennborg ([email protected], [zmodem](https://github.com/zmodem)) -- Release management \
 Kostya Serebryany ([kcc](https://github.com/kcc)) -- Sanitizers \
+Alexei Starovoitov ([email protected], [4ast](https://github.com/4ast)) -- BPF backend \
 Evgeniy Stepanov ([eugenis](https://github.com/eugenis)) -- Sanitizers
 
 ### Former maintainers of removed components