[FIX] l10n_br_purchase: CFOP is taken from the fiscal operation
[FIX] l10n_br_purchase: CFOP is taken from the fiscal operation

OCA/l10n-brazil,OCA/l10n-brazil,akretion/l10n-brazil,OCA/l10n-brazil,akretion/l10n-brazil,akretion/l10n-brazil