west.yml: stm32: Remove PAGESIZE definition

PAGESIZE definition from legacy.h conflicts with POSIX definition.
Since this definition comes from legacy.h file which is only there
for Cube backward compatibility that we don't maintain in Zephyr,
simply remove it.

Note:
This is a second fix for zephyrproject-rtos#73363 which wasn't sufficiently tested.
Legacy file is included in stm32yyxx_hal_def.h headers and actually
removing it generates build errors as we're relying on some of the
definitions. Removing this inclusion is necessary and will be done
but on next release.

(cherry picked from commit e1b13b6)

Original-Signed-off-by: Erwan Gouriou <erwan.gouriou@st.com>
GitOrigin-RevId: e1b13b6
Change-Id: I8a505ed45fabc04c49a0043a9fdcd209c7541838
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/zephyr/+/5649642
Tested-by: ChromeOS Prod (Robot) <chromeos-ci-prod@chromeos-bot.iam.gserviceaccount.com>
Reviewed-by: Ting Shen <phoenixshen@chromium.org>
Tested-by: Ting Shen <phoenixshen@chromium.org>
Commit-Queue: Ting Shen <phoenixshen@chromium.org>

west.yml

@@ -234,7 +234,7 @@ manifest:
       groups:
         - hal
     - name: hal_stm32
-      revision: 6443e5c4d391c3e9e283c5728cd07d855e663965
+      revision: 855f195793df094644ce8b8617c01275408bbf58
       path: modules/hal/stm32
       groups:
         - hal