[uwb-uci] change _payload_ in pdl to of type 8[]

_payload_ in pdl would pick the whole packet instead of the
remaning items. change them to 8[] so that it picks only the
remaining bytes after initial parsing.

With this, raw_ntf should consist of all the bytes in ntf packet

Bug: 266016401
Test: atest libuwb_uci_packet_tests
Test: Manual testing
Change-Id: I9f50366e2b14173e818901484b547e395729e6b3
3 files changed