CMAKE - Fix ld.lld undefined reference: drmGetVersion (#100)

After some update to amdclang a tag '--no-allow-shlib-undefine' began
being enforced. This caused compile failure when building with:
    CC=amdclang CXX=amdclang++ cmake -B build

DRM_AMDGPU_LIB is never used.
DRM_LIBRARIES is the one set by pkg_check_modules(DRM...)

Change-Id: I031aa1325b7a09a027aba8ca5cc7cc44fe86d3be

Signed-off-by: Galantsev, Dmitrii <dmitrii.galantsev@amd.com>

[ROCm/amdsmi commit: c3864bf617]

projects/amdsmi/CMakeLists.txt

@@ -171,7 +171,9 @@ if(ENABLE_ESMI_LIB)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-write-strings")
 endif()
 
+# sets DRM_LIBRARIES and DRM_INCLUDE_DIRS
 pkg_check_modules(DRM REQUIRED libdrm)
+# sets AMDGPU_DRM_LIBRARIES and AMDGPU_DRM_INCLUDE_DIRS
 pkg_check_modules(AMDGPU_DRM REQUIRED libdrm_amdgpu)
 
 include_directories(${CMAKE_CURRENT_SOURCE_DIR}/include ${CMAKE_CURRENT_SOURCE_DIR}/third_party/shared_mutex

projects/amdsmi/src/CMakeLists.txt

@@ -81,7 +81,7 @@ configure_file("${AMD_SMI_TARGET}Config.in" "${PROJECT_SOURCE_DIR}/include/amd_s
 add_executable(amd_smi_ex "../example/amd_smi_drm_example.cc")
 target_link_libraries(amd_smi_ex ${AMD_SMI_TARGET})
 add_library(${AMD_SMI_TARGET} ${SRC_LIST} ${INC_LIST})
-target_link_libraries(${AMD_SMI_TARGET} pthread rt dl ${DRM_AMDGPU_LIB} ${AMDGPU_DRM_LIBRARIES})
+target_link_libraries(${AMD_SMI_TARGET} pthread rt dl ${DRM_LIBRARIES} ${AMDGPU_DRM_LIBRARIES})
 target_include_directories(${AMD_SMI_TARGET} PRIVATE ${CMAKE_CURRENT_SOURCE_DIR} ${PROJECT_SOURCE_DIR}/rocm_smi/include
                                                      ${PROJECT_SOURCE_DIR}/common/shared_mutex)