it8xxx2: Remove label attribute
it8xxx2: Remove label attribute

The label attribute for GPIO DTS configs is no
longer required, so remove it.

BUG=b:210527501
TEST=zmake configure -b drawcia_riscv
BRANCH=none

Signed-off-by: Andrew McRae <44ad1424cfc8411c96d9181798ca41ae55709dfb@google.com>
Change-Id: I0b264c689f76877021ebed66d150f50d43b58e67
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3336636
Reviewed-by: Sam Hurst <500b4cddcd66abe3fe333e92c4c95d7f41e62e4e@google.com>

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