Fix for HW CRC calculations on Silicon Labs targets#8026

Merged

0xc0170 merged 2 commits intoARMmbed:masterfrom

SiliconLabs:bugfix/gpcrc

Sep 24, 2018

Commits on Sep 6, 2018

Word-sized input to GPCRC is only valid for 32-bit polynomial
stevew817
committed

Commits on Sep 22, 2018

Apply @kjbracey-arm's comments
stevew817
committed