cmake/gcc: disable [-Werror=maybe-uninitialized] for GCC >= 12.1.0

With GCC 12.1.0 there are numerous false-positive warnings on
"maybe uninitialized" variables.

CMakeLists.txt

@@ -540,6 +540,12 @@ if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.0)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror")
 endif()
 
+# GCC >= 12.1.0: Disable analysis on "maybe-uninitialized" variables because of the high false-positive rate
+if(CMAKE_COMPILER_IS_GNUCXX AND NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 12.1)
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-maybe-uninitialized")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-maybe-uninitialized")
+endif()
+
 if(CMAKE_C_COMPILER_ID MATCHES "GNU")
   # Increase inlining limit to allow gcc compilation on e.g. RPi2
   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} --param large-function-growth=1600")