pl030: Fix write endian conversion
pl030: Fix write endian conversion

The write call would write in big endian, but the device should
be using native endian.

BUG=b:171750410
TEST=This bug was caught by the accompanying unit test.

Change-Id: I65aa4c89857766e5ef3280bde90e6ba3a33d1ebd
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/2515059
Tested-by: kokoro <2ac7b1f3fa578934c95181d4272be0d3bca00121@google.com>
Commit-Queue: Dennis Kempin <cd09796fb571bec2782819dbfd33307f65b1c778@google.com>
Reviewed-by: Daniel Verkamp <72bc170b46ec491f7bdd4359a1c0bfed274de40c@chromium.org>
Reviewed-by: Zach Reizner <3374927928a53d04457674c546bd4de57c2044ec@chromium.org>

google/crosvm,google/crosvm,google/crosvm,google/crosvm