fby3:dl:adjust negative VR reading

[DelphineChiu]

Summary
-Description:

• As Infineon VR reporting current -1(A), BMC will show NA, but expecting current reading 0(A) while VR reporting -2~0(A).
• As system in idle status, rarely reading VR power NA. Expecting power reading 0(W) while VR reporting -4~0(W).
• Added power reading filter for Renesas VR and return power reading 0(W) as VR reporting power between -4~0(W).
• Set the accessible of P3V3_STBY_VR to stby_access, because P3V3 STBY is ready after cpld turn on STBY power.

Test plan:

• Build code : pass.
• sensor util :
  root@bmc-oob:~# sensor-util slot2
  slot2:
  MB Inlet Temp (0x1) : 28.00 C | (ok)
  MB Outlet Temp (0x2) : 36.00 C | (ok)
  FRONT IO Temp (0x3) : 23.20 C | (ok)
  PCH Temp (0x4) : 39.00 C | (ok)
  SOC CPU Temp (0x5) : 37.00 C | (ok)
  SOC Therm Margin (0xD) : -39.00 C | (ok)
  SOC CPU TjMax (0x25) : 76.00 C | (ok)
  CPU Package Pwr (0x1E) : 13.00 Watts | (ok)
  SOC DIMMA Temp (0x6) : 33.00 C | (ok)
  SOC DIMMB Temp (0x7) : 0.00 C | (ok)
  SOC DIMMC Temp (0x9) : 32.00 C | (ok)
  SOC DIMMD Temp (0xA) : 34.00 C | (ok)
  SOC DIMME Temp (0xB) : 0.00 C | (ok)
  SOC DIMMF Temp (0xC) : 33.00 C | (ok)
  SSD0 Temp (0xE) : 26.00 C | (ok)
  HSC Temp (0xF) : 33.00 C | (ok)
  VCCIN VR Temp (0x10) : 39.00 C | (ok)
  VCCSA VR Temp (0x11) : 38.00 C | (ok)
  VCCIO VR Temp (0x12) : 40.00 C | (ok)
  3V3_STBY VR Temp (0x13) : 38.00 C | (ok)
  VDDQ_ABC VR Temp (0x14) : 37.00 C | (ok)
  VDDQ_DEF VR Temp (0x15) : 38.00 C | (ok)
  P12V_STBY Vol (0x20) : 12.03 Volts | (ok)
  P3V_BAT Vol (0x21) : 3.12 Volts | (ok)
  P3V3_STBY Vol (0x22) : 3.32 Volts | (ok)
  P1V05_PCH Vol (0x23) : 1.06 Volts | (ok)
  PVNN_PCH Vol (0x24) : 1.01 Volts | (ok)
  HSC Input Vol (0x26) : 11.94 Volts | (ok)
  VCCIN VR Vol (0x27) : 1.69 Volts | (ok)
  VCCSA VR Vol (0x28) : 0.82 Volts | (ok)
  VCCIO VR Vol (0x29) : 1.01 Volts | (ok)
  P3V3_STBY VR Vol (0x2A) : 3.28 Volts | (ok)
  VDDQ_ABC VR Vol (0x2C) : 1.23 Volts | (ok)
  VDDQ_DEF VR Vol (0x2D) : 1.23 Volts | (ok)
  HSC Output Cur (0x30) : 1.80 Amps | (ok)
  VCCIN VR Cur (0x31) : 3.00 Amps | (ok)
  VCCSA VR Cur (0x32) : 2.10 Amps | (ok)
  VCCIO VR Cur (0x33) : 3.80 Amps | (ok)
  P3V3_STBY VR Cur (0x34) : 0.60 Amps | (ok)
  VDDQ_ABC VR Cur (0x35) : 1.25 Amps | (ok)
  VDDQ_DEF VR Cur (0x36) : 1.50 Amps | (ok)
  HSC Input Pwr (0x2E) : 22.00 Watts | (ok)
  HSC Input AvgPwr (0x39) : 22.00 Watts | (ok)
  VCCIN VR Pout (0x3A) : 6.00 Watts | (ok)
  VCCSA VR Pout (0x3C) : 2.00 Watts | (ok)
  VCCIO VR Pout (0x3D) : 3.00 Watts | (ok)
  P3V3_STBY VRPout (0x3E) : 1.00 Watts | (ok)
  VDDQ_ABC VRPout (0x3F) : 2.97 Watts | (ok)
  VDDQ_DEF VRPout (0x42) : 0.99 Watts | (ok)

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