Correct a documentation error regarding DIFs
Correct a documentation error regarding DIFs

DIFs are a verification resource and are intended to make writing DV and
silicon bringup code easier.

DIFs are not primitives for writing production code such as ROM, ROM_EXT,
bootloaders or kernel drivers.

Signed-off-by: Chris Frantz <d3397dc265da044816f611610217f391e4e7ef39@google.com>

lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan