[LLVM] Update cmake and library layering maintainers (#120542)

Currently @chandlerc is listed as the maintainer for "CMake and library
layering", but he has not been active in that area in while.
Consequently, this patch updates the maintainers for CMake and
library layering to folks who are working more actively in these
areas.

See https://llvm.org/docs/DeveloperPolicy.html#maintainers for
context on the maintainers terminology.

Author: nikic

llvm/Maintainers.md

@@ -333,10 +333,10 @@ [email protected] (email), [kuhar](https://github.com/kuhar) (GitHub)
 Peter Collingbourne \
 [email protected] (email), [pcc](https://github.com/pcc) (GitHub)
 
-#### CMake and library layering
+#### CMake
 
-Chandler Carruth \
-[email protected], chandlerc@google.com (email), [chandlerc](https://github.com/chandlerc) (GitHub)
+Petr Hosek \
+phosek@google.com (email), [petrhosek](https://github.com/petrhosek) (GitHub)
 
 #### Debug info and DWARF
 
@@ -356,6 +356,11 @@ [email protected] (email), [echristo](https://github.com/echristo) (GitHub)
 Teresa Johnson \
 [email protected] (email), [teresajohnson](https://github.com/teresajohnson) (GitHub)
 
+#### Library layering
+
+Takumi Nakamura \
+[email protected] (email), [chapuni](https://github.com/chapuni) (GitHub)
+
 #### MCJIT, Orc, RuntimeDyld, PerfJITEvents
 
 Lang Hames \
@@ -477,7 +482,7 @@ [email protected] (email), [lattner](https://github.com/lattner) (GitHub), clattn
 
 Paul C. Anagnostopoulos ([email protected], [Paul-C-Anagnostopoulos](https://github.com/Paul-C-Anagnostopoulos)) -- TableGen \
 Justin Bogner ([email protected], [bogner](https://github.com/bogner)) -- SelectionDAG \
-Chandler Carruth ([email protected], [email protected], [chandlerc](https://github.com/chandlerc)) -- ADT, Support, Inlining \
+Chandler Carruth ([email protected], [email protected], [chandlerc](https://github.com/chandlerc)) -- ADT, Support, Inlining, CMake and library layering \
 Peter Collingbourne ([email protected], [pcc](https://github.com/pcc)) -- LTO \
 Evan Cheng ([email protected]) -- Parts of code generator not covered by someone else \
 Jake Ehrlich ([email protected], [jakehehrlich](https://github.com/jakehehrlich)) -- llvm-objcopy and ObjCopy library \