[ARM] 4042/1: H1940: Fix sparse errors from VA addresses

Fix address-space conversion errors from passing addresses
generated from include/asm-arm/arch-s3c2410/map.h by adding
an __force argument to the `void __iomem *` for all the
virtual addresses.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>