Set the SOVERSION in CMake from MAJOR/MINOR/RELEASE variables

Having the SOVERSION derived from the git tags doesn't scale well
for distributions that don't have the git history while building
(such as a tarball).

As part of e7d6590 the strings are parsed from a header.  Re-use
those.

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>

src/CMakeLists.txt

@@ -59,22 +59,7 @@ endif()
 # VERSION_* variables should be set by get_version_from_tag
 message("Package version: ${PKG_VERSION_STR}")
 
-# Debian package specific variables
-# Set a default value for the package version
-get_version_from_tag("${${AMD_SMI_LIBS_TARGET}_VERSION_MAJOR}.${${AMD_SMI_LIBS_TARGET}_VERSION_MINOR}.0.0"
-                     ${SO_VERSION_GIT_TAG_PREFIX} GIT)
-
-# VERSION_* variables should be set by get_version_from_tag
-if(${ROCM_PATCH_VERSION})
-    set(VERSION_PATCH ${ROCM_PATCH_VERSION})
-    set(SO_VERSION_STRING "${VERSION_MAJOR}.${VERSION_MINOR}.${VERSION_PATCH}")
-else()
-    set(SO_VERSION_STRING "${VERSION_MAJOR}.${VERSION_MINOR}")
-endif()
-set(${AMD_SMI}_VERSION_MAJOR "${VERSION_MAJOR}")
-set(${AMD_SMI}_VERSION_MINOR "${VERSION_MINOR}")
-set(${AMD_SMI}_VERSION_PATCH "0")
-set(${AMD_SMI}_VERSION_BUILD "0")
+set(SO_VERSION_STRING "${MAJOR}.${MINOR}.${RELEASE}")
 message("SOVERSION: ${SO_VERSION_STRING}")
 
 add_library(${AMD_SMI} ${SRC_LIST} ${INC_LIST})
@@ -97,7 +82,7 @@ target_include_directories(${AMD_SMI} PUBLIC "$<BUILD_INTERFACE:${CMAKE_CURRENT_
                                              "$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>")
 
 ## Set the VERSION and SOVERSION values
-set_property(TARGET ${AMD_SMI} PROPERTY SOVERSION "${VERSION_MAJOR}")
+set_property(TARGET ${AMD_SMI} PROPERTY SOVERSION "${MAJOR}")
 set_property(TARGET ${AMD_SMI} PROPERTY VERSION "${SO_VERSION_STRING}")
 
 ## If the library is a release, strip the target library