[CMake] Option -fno-shrink-wrap is incorrectly handled

[ljmf00]

Summary

CMake variables are case sensitive, and Uppercase_* variables doesn't exist.
This patch uses the correct variable.

[ljmf00]

Ping.

llvm/cmake/modules/HandleLLVMOptions.cmake

else()
     if ((CMAKE_COMPILER_IS_GNUCXX AND
          NOT (LLVM_NATIVE_ARCH STREQUAL "SystemZ" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 10.3))
        OR (CMAKE_CXX_COMPILER_ID MATCHES "Clang" AND CMAKE_CXX_COMPILER_VERSION GREATER_EQUAL 14))
       add_flag_if_supported("-fno-semantic-interposition" FNO_SEMANTIC_INTERPOSITION)
     endif()
   endif()
   # GCC for MIPS can miscompile LLVM due to PR37701.
   if(CMAKE_COMPILER_IS_GNUCXX AND LLVM_NATIVE_ARCH STREQUAL "Mips" AND
-         NOT Uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG")
+         NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG")
     add_flag_or_print_warning("-fno-shrink-wrap" FNO_SHRINK_WRAP)
   endif()
   # gcc with -O3 -fPIC generates TLS sequences that violate the spec on
   # Solaris/sparcv9, causing executables created with the system linker
   # to SEGV (GCC PR target/96607).
   # clang with -O3 -fPIC generates code that SEGVs.
   # Both can be worked around by compiling with -O instead.
   if(${CMAKE_SYSTEM_NAME} STREQUAL "SunOS" AND LLVM_NATIVE_ARCH STREQUAL "Sparc")