Specify CMAKE_BUILD_TYPE=RelWithDebInfo

We didn't specify a build type before like we do for the `llvm` and
`clang` projects. This changes causes `-DNDEBUG` to be added to the
compile flags among probably other changes. We have this in `llvm` and
`clang` but not here and I don't know why. I for example need `-DNDEBUG`
to be defined because it is required for my PGO instrumentation builds.

Here's the help for this `CMAKE_BUILD_TYPE` option:

https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html

lld.spec

@@ -12,7 +12,7 @@
 
 Name:		lld
 Version:	%{maj_ver}.%{min_ver}.%{patch_ver}%{?rc_ver:~rc%{rc_ver}}
-Release:	1%{?dist}
+Release:	2%{?dist}
 Summary:	The LLVM Linker
 
 License:	NCSA
@@ -94,6 +94,7 @@ LLVM regression tests.
 
 %cmake \
 	-GNinja \
+	-DCMAKE_BUILD_TYPE=RelWithDebInfo \
 	-DLLVM_LINK_LLVM_DYLIB:BOOL=ON \
 	-DLLVM_DYLIB_COMPONENTS="all" \
 	-DCMAKE_SKIP_RPATH:BOOL=ON \
@@ -205,6 +206,9 @@ fi
 %{_datadir}/lld/lit.lld-test.cfg.py
 
 %changelog
+* Mon Jul 11 2022 Konrad Kleine <kkleine@redhat.com> - 14.0.5-2
+- Set build type to RelWithDebInfo
+
 * Fri Jun 17 2022 Timm Bäder <tbaeder@redhat.com> - 14.0.5-1
 - Update to 14.0.5