servo_v4: fix in displaying CCD polarity
servo_v4: fix in displaying CCD polarity

From crrev.com/c/1529724, servo-v4 console displays the ccd polarity
in opposite manner.

2019-05-15 11:53:59 [583.849805 CCD: connected noflip]
2019-05-15 11:54:01 adC
2019-05-15 11:54:01   CHG_CC1_PD = 1708
2019-05-15 11:54:01   CHG_CC2_PD = 33
2019-05-15 11:54:01   DUT_CC1_PD = 1637
2019-05-15 11:54:01   DUT_CC2_PD = 1625
2019-05-15 11:54:01   SBU1_DET = 3092
2019-05-15 11:54:01   SBU2_DET = 24
2019-05-15 11:54:01   SUB_C_REF = 569

2019-05-15 11:54:20 C1 st3
2019-05-15 11:54:20 C1 st5
2019-05-15 11:54:20 [604.585404 CCD: connected flip]
2019-05-15 11:54:23 adc
2019-05-15 11:54:24   CHG_CC1_PD = 1712
2019-05-15 11:54:24   CHG_CC2_PD = 32
2019-05-15 11:54:24   DUT_CC1_PD = 1616
2019-05-15 11:54:24   DUT_CC2_PD = 1644
2019-05-15 11:54:24   SBU1_DET = 20
2019-05-15 11:54:24   SBU2_DET = 2955
2019-05-15 11:54:24   SUB_C_REF = 611

BUG=None
BRANCH=None
TEST=manually build fw and checked.

2019-05-15 12:07:46 [27.057955 CCD: connected noflip]
2019-05-15 12:07:47 adc
2019-05-15 12:07:48   CHG_CC1_PD = 1705
2019-05-15 12:07:48   CHG_CC2_PD = 4
2019-05-15 12:07:48   DUT_CC1_PD = 1617
2019-05-15 12:07:48   DUT_CC2_PD = 1645
2019-05-15 12:07:48   SBU1_DET = 20
2019-05-15 12:07:48   SBU2_DET = 3102
2019-05-15 12:07:48   SUB_C_REF = 592

2019-05-15 12:08:05 [45.191161 CCD: connected flip]
2019-05-15 12:08:06 adc
2019-05-15 12:08:08   CHG_CC1_PD = 1704
2019-05-15 12:08:08   CHG_CC2_PD = 4
2019-05-15 12:08:08   DUT_CC1_PD = 1638
2019-05-15 12:08:08   DUT_CC2_PD = 1625
2019-05-15 12:08:08   SBU1_DET = 2970
2019-05-15 12:08:08   SBU2_DET = 23
2019-05-15 12:08:08   SUB_C_REF = 563

Change-Id: I0e8540fb30460827772fefd63a3426d67fa85092
Signed-off-by: Namyoon Woo <e8732cefb861f07768f47df788a8e8eb75efc09a@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1613650
Reviewed-by: Nick Sanders <f4566bb3c90c0bf5fa0906b296b1da45051a62ee@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec