stable-rc 4.19: net/ipv6/addrconf.c:6747:22: error: 'blackhole_netdev' undeclared

[Naresh Kamboju <naresh.kamboju@linaro.org>]

There are two reasons for build failure on arm64, arm, x86_64 and i386.

For arm64 we have identified missing patch,
Patch "efd00c7 arm64: Add MIDR encoding for HiSilicon Taishan CPUs" needs to
be bacported as well,

for arm, x86_64 and i386 build error log,
------------------------------------

net/ipv6/addrconf.c: In function 'addrconf_init':
net/ipv6/addrconf.c:6747:22: error: 'blackhole_netdev' undeclared
(first use in this function); did you mean 'alloc_netdev'?
  bdev = ipv6_add_dev(blackhole_netdev);
                      ^~~~~~~~~~~~~~~~
                      alloc_netdev
net/ipv6/addrconf.c:6747:22: note: each undeclared identifier is
reported only once for each function it appears in
net/ipv6/addrconf.c: In function 'addrconf_cleanup':
net/ipv6/addrconf.c:6839:18: error: 'blackhole_netdev' undeclared
(first use in this function); did you mean 'alloc_netdev'?
  addrconf_ifdown(blackhole_netdev, 2);
                  ^~~~~~~~~~~~~~~~
                  alloc_netdev


For arm64 build error log,
---------------------------------------
arch/arm64/kernel/cpufeature.c: In function 'unmap_kernel_at_el0':
arch/arm64/kernel/cpufeature.c:909:21: error: 'MIDR_HISI_TSV110'
undeclared (first use in this function); did you mean
'GICR_ISACTIVER0'?
   MIDR_ALL_VERSIONS(MIDR_HISI_TSV110),
                     ^
arch/arm64/include/asm/cputype.h:141:12: note: in definition of macro
'MIDR_RANGE'
   .model = m,     \
            ^


Meta data:
------------------------------------------------------------------------
kernel: 4.19.82-rc1
git repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
git branch: linux-4.19.y
git commit: 7d816e1d91b01911392b7f8f93a4a153b9af60d3
git describe: v4.19.81-145-g7d816e1d91b0
Test details: https://qa-reports.linaro.org/lkft/linux-stable-rc-4.19-oe-sanity/build/v4.19.81-145-g7d816e1d91b0


- Naresh