Description: net: hns: fix ethtool_get_strings overflow in hns driver
References:
 https://patchwork.ozlabs.org/patch/885547/
Notes:
 bwh> Introduced in 4.4 when the driver was added.  There was an
 bwh> attempted fix for this in 4.12 (commit 412b65d15a7f "net: hns: fix
 bwh> ethtool_get_strings overflow ...") but it is far from complete.
 carnil> Later on d61d263c8d82db7c4404a29ebc29674b1c0c05c9 (4.16-rc7)
 carnil> is applied, reverting partially 412b65d15a7f and returning EOPNOTSUPP
 carnil> for not implemented ethtool flags.
Bugs:
upstream: released (4.16-rc7) [d61d263c8d82db7c4404a29ebc29674b1c0c05c9]
4.9-upstream-stable: released (4.9.93) [83216cbbfda8c7091fffa8260e4436355f1d49a7]
3.16-upstream-stable: N/A "Vulnerable code not present"
3.2-upstream-stable: N/A "Vulnerable code not present"
sid: released (4.15.17-1)
4.9-stretch-security: released (4.9.88-1) [bugfix/all/net-hns-Fix-ethtool-private-flags.patch]
3.16-jessie-security: N/A "Vulnerable code not present"
3.2-wheezy-security: N/A "Vulnerable code not present"