wireless-regdb: Add ETSI as the DFS region for Hong Kong
wireless-regdb: Add ETSI as the DFS region for Hong Kong

Based on [1], Hong Kong follows ETSI requirements for DFS.

[1] http://www.ofca.gov.hk/filemanager/ofca/en/content_401/hkta1039.pdf

Signed-off-by: Seth Forshee <ead5052bef9b6b56b51f87cdc5b831be775ee6fb@canonical.com>

Distrotech/wireless-regdb