purin: convert readl/writel to read32/write32

This patch changes accessor macros from readl/writel to read32/write32.
There is no functionality change.

BUG=none
BRANCH=tot
TEST=built coreboot for purin

Change-Id: Ib80c2537cbf5c52f19207dd0a8c7816be89eed6e
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/268997
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: Daisuke Nojiri <dnojiri@google.com>
Commit-Queue: Daisuke Nojiri <dnojiri@google.com>
Trybot-Ready: Daisuke Nojiri <dnojiri@google.com>
7 files changed