wifi: rtw89: debug: add PMAC counter in bb_info

PMAC (Pseudo MAC) is a circuit within the baseband that can report
various packet-related counters through registers, such as TX ON,
TX EN, CCA, FA, CRC, etc. The driver periodically collects per
PHY PMAC counters in track_work and exposes them through the
bb_info debugfs for easier debugging.

The output of PMAC counter:

  == PMAC
  TX [CCK_TXEN, CCK_TXON, OFDM_TXEN, OFDM_TXON]: [0, 0, 17, 17]
  CRC  [CCK, OFDM, HT, VHT, HE, EHT, ALL, MPDU]
   ok: [0, 301, 0, 0, 5, 0, 306, 5]
  err: [0, 4, 0, 0, 0, 0, 4, 0]
  CCA [CCK, OFDM]: [0, 353]
  FA  [CCK, OFDM]: [0, 39]
  CCA spoofing [CCK, OFDM]: [0, 0]
  CCK SFD: 0, SIG_GG: 0
  OFDM Parity: 4, Rate: 2, LSIG_BRK_S: 0, LSIG_BRK_L: 7, SBD: 5
  AMPDU miss: 0

Signed-off-by: Kuan-Chung Chen <damon.chen@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20260429132625.1659182-5-pkshih@realtek.com

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