Implement RPM recommends for libdrm-amdgpu

CPack does not support recommends for RPM generation, so I've generated
a template RPM SPEC files in order to make modifications to allow for
support of recommends.

The spec.in file was generated using the cpack option
"CPACK_RPM_GENERATE_USER_BINARY_SPECFILE_TEMPLATE" and was modified very
sparingly to avoid any maintanance burden, e.g. can be easily
regenerated. The CPACK_RPM_USER_BINARY_SPECFILE is then used to specify
the customized template file, instead of using the cmake's template.

From what I understand, the point of these two options is to allow
developers to tailor the specfile to their desire, since rpm spec files
are much more advanced then the equilivent debian file.

Change-Id: I80c69be58a3c57729ed997fd2ce01f5d16b9e9b9
Signed-off-by: Jeremy Newton <Jeremy.Newton@amd.com>

RPM/hsakmt-roct-devel.spec.in

@@ -0,0 +1,97 @@
+# Restore old style debuginfo creation for rpm >= 4.14.
+%undefine _debugsource_packages
+%undefine _debuginfo_subpackages
+
+# -*- rpm-spec -*-
+BuildRoot:      %_topdir/@CPACK_PACKAGE_FILE_NAME@@CPACK_RPM_PACKAGE_COMPONENT_PART_PATH@
+Summary:        @CPACK_RPM_PACKAGE_SUMMARY@
+Name:           @CPACK_RPM_PACKAGE_NAME@
+Version:        @CPACK_RPM_PACKAGE_VERSION@
+Release:        @CPACK_RPM_PACKAGE_RELEASE@
+License:        @CPACK_RPM_PACKAGE_LICENSE@
+Group:          @CPACK_RPM_PACKAGE_GROUP@
+Vendor:         @CPACK_RPM_PACKAGE_VENDOR@
+
+@TMP_RPM_URL@
+@TMP_RPM_REQUIRES@
+@TMP_RPM_REQUIRES_PRE@
+@TMP_RPM_REQUIRES_POST@
+@TMP_RPM_REQUIRES_PREUN@
+@TMP_RPM_REQUIRES_POSTUN@
+@TMP_RPM_PROVIDES@
+@TMP_RPM_OBSOLETES@
+@TMP_RPM_CONFLICTS@
+@TMP_RPM_SUGGESTS@
+@TMP_RPM_AUTOPROV@
+@TMP_RPM_AUTOREQ@
+@TMP_RPM_AUTOREQPROV@
+@TMP_RPM_BUILDARCH@
+@TMP_RPM_PREFIXES@
+@TMP_RPM_EPOCH@
+
+# Modifications to allow recommends to be used (not implemented in cpack):
+%if "@CPACK_RPM_PACKAGE_RECOMMENDS@" != ""
+Recommends: @CPACK_RPM_PACKAGE_RECOMMENDS@
+%endif
+# End of modifications
+
+@TMP_RPM_DEBUGINFO@
+
+%define _rpmdir %_topdir/RPMS
+%define _srcrpmdir %_topdir/SRPMS
+@FILE_NAME_DEFINE@
+%define _unpackaged_files_terminate_build 0
+@TMP_RPM_SPEC_INSTALL_POST@
+@CPACK_RPM_SPEC_MORE_DEFINE@
+@CPACK_RPM_COMPRESSION_TYPE_TMP@
+
+%description
+@CPACK_RPM_PACKAGE_DESCRIPTION@
+
+# This is a shortcutted spec file generated by CMake RPM generator
+# we skip _install step because CPack does that for us.
+# We do only save CPack installed tree in _prepr
+# and then restore it in build.
+%prep
+mv $RPM_BUILD_ROOT %_topdir/tmpBBroot
+
+%install
+if [ -e $RPM_BUILD_ROOT ];
+then
+  rm -rf $RPM_BUILD_ROOT
+fi
+mv %_topdir/tmpBBroot $RPM_BUILD_ROOT
+
+@TMP_RPM_DEBUGINFO_INSTALL@
+
+%clean
+
+%post
+@RPM_SYMLINK_POSTINSTALL@
+@CPACK_RPM_SPEC_POSTINSTALL@
+
+%posttrans
+@CPACK_RPM_SPEC_POSTTRANS@
+
+%postun
+@CPACK_RPM_SPEC_POSTUNINSTALL@
+
+%pre
+@CPACK_RPM_SPEC_PREINSTALL@
+
+%pretrans
+@CPACK_RPM_SPEC_PRETRANS@
+
+%preun
+@CPACK_RPM_SPEC_PREUNINSTALL@
+
+%files
+%defattr(@TMP_DEFAULT_FILE_PERMISSIONS@,@TMP_DEFAULT_USER@,@TMP_DEFAULT_GROUP@,@TMP_DEFAULT_DIR_PERMISSIONS@)
+@CPACK_RPM_INSTALL_FILES@
+@CPACK_RPM_ABSOLUTE_INSTALL_FILES@
+@CPACK_RPM_USER_INSTALL_FILES@
+
+%changelog
+@CPACK_RPM_SPEC_CHANGELOG@
+
+@TMP_OTHER_COMPONENTS@