novena: eeprom: Fixup parsing of es8328, sata, eeprom flags

Previously, the SATA flag wasn't getting parsed at all, and the EEPROM
flag was getting treated as the SATA flag.  This has been corrected now.

Additionally, the es8328 flag was negated.

Signed-off-by: Sean Cross <xobs@kosagi.com>
novena: it6251: Check if the IT6251 is connected

We enable the backlight and bridge regulators, then check to see if
device 0x5c responds.  If so, we assume there is an IT6251 present.

Signed-off-by: Sean Cross <xobs@kosagi.com>
debian: Update to -r8

Signed-off-by: Sean Cross <xobs@kosagi.com>