[Buildroot] [PATCH 1/1] package/libvirt: aarch64 needs headers >= 4.11

[Fabrice Fontaine]

libvirt unconditionally uses HWCAP_CPUID on arm which is only available
since kernel 4.11 and
https://github.com/torvalds/linux/commit/77c97b4ee21290f5f083173d957843b615abbff2
resulting in the following build failure since the addition of the
packahe in commit ccfc90e1010e42e6529afae3a5ea8bf7226dabc1:

../src/cpu/cpu_arm.c: In function 'virCPUarmCpuDataFromRegs':
../src/cpu/cpu_arm.c:562:20: error: 'HWCAP_CPUID' undeclared (first use in this function); did you mean 'HWCAP_PMULL'?
     if (!(hwcaps & HWCAP_CPUID)) {
                    ^~~~~~~~~~~
                    HWCAP_PMULL

Fixes:
 - http://autobuild.buildroot.org/results/85bf7b4dad73a748bf439e63874eb64d9a53088f

Signed-off-by: Fabrice Fontaine <fontaine.fabrice at gmail.com>
---
 package/libvirt/Config.in | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/package/libvirt/Config.in b/package/libvirt/Config.in
index 2f191882cc..e231511906 100644
--- a/package/libvirt/Config.in
+++ b/package/libvirt/Config.in
@@ -1,6 +1,6 @@
 config BR2_PACKAGE_LIBVIRT_ARCH_SUPPORTS
 	bool
-	default y if BR2_aarch64
+	default y if BR2_aarch64 && BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_11
 	default y if BR2_i386
 	default y if BR2_x86_64
 	depends on BR2_USE_MMU # fork()
-- 
2.30.2