tests: mgmt: mcumgr: fs_mgmt_hash_supported: make CI green

Exclude two more platforms from the tests.
They provoke devicetree-related build errors which weren't introduced
by the changes in this PR (zephyrproject-rtos#71947).

Signed-off-by: Tomi Fontanilles <tomi.fontanilles@nordicsemi.no>

tests/subsys/mgmt/mcumgr/fs_mgmt_hash_supported/testcase.yaml

@@ -20,6 +20,8 @@ tests:
       - lpcxpresso51u68
       - nucleo_h745zi_q/stm32h745xx/m4
       - stm32h747i_disco/stm32h747xx/m4
+      - lpcxpresso55s69/lpc55s69/cpu1
+      - mpfs_icicle
   mgmt.mcumgr.fs.mgmt.hash.supported.sha256:
     extra_args: >
       OVERLAY_CONFIG="configuration/sha256.conf"
@@ -29,6 +31,8 @@ tests:
       - lpcxpresso51u68
       - nucleo_h745zi_q/stm32h745xx/m4
       - stm32h747i_disco/stm32h747xx/m4
+      - lpcxpresso55s69/lpc55s69/cpu1
+      - mpfs_icicle
   mgmt.mcumgr.fs.mgmt.hash.supported.all:
     extra_args: >
       OVERLAY_CONFIG="configuration/all.conf"
@@ -38,3 +42,5 @@ tests:
       - lpcxpresso51u68
       - nucleo_h745zi_q/stm32h745xx/m4
       - stm32h747i_disco/stm32h747xx/m4
+      - lpcxpresso55s69/lpc55s69/cpu1
+      - mpfs_icicle