wireless-regdb: Update regulatory rules for Hong Kong (HK)

Update frequency ranges and max EIRP for 2.4 GHz and 5 GHz, and add support for
6 GHz based on latest HK regulations.

Source:
https://www.ofca.gov.hk/filemanager/ofca/en/content_401/hkca1039.pdf (2.4 GHz and 5 GHz)
https://www.ofca.gov.hk/filemanager/ofca/en/content_401/hkca1081.pdf (6 GHz)

Signed-off-by: Tavio Wong <tavio.wong@proton.me>
Signed-off-by: Seth Forshee <sforshee@kernel.org>