package/llvm: needs host gcc >= 5
Fix the following build failure with host-lld, libclc, etc. raised since
bump to version 11.1.0 in commit
456f704e6b7be147c504d53a78536938f088e8e8:
CMake Error at cmake/modules/CheckCompilerVersion.cmake:38 (message):
Host GCC version must be at least 5.1, your version is 4.8.5.
Fixes:
- http://autobuild.buildroot.org/results/7f120dbcbd5410477550fa8645e7d1cb0ae6cf1c
- http://autobuild.buildroot.org/results/2382d7112618236aeafcaf581dc22a8d938824cf
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>