UNREG: PprC: add support for of W16 literals (Ticket #15237)

Authored by trofi on Jun 14 2018, 5:13 PM.

Description

UNREG: PprC: add support for of W16 literals (Ticket Trac #15237)

Fix UNREG build failure for 32-bit targets.

This change is an equivalent of commit
0238a6c78102d43dae2f56192bd3486e4f9ecf1d
("UNREG: PprC: add support for of W32 literals")

The change allows combining two subwords into one word
on 32-bit targets. Tested on nios2-unknown-linux-gnu.

GHC Trac Issues: Trac #15237

Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>