corstone1000: Pin layers SHA for whinlatter release

Pinned layers in corstone1000-base.yml and corstone1000-a320.yml.

Signed-off-by: Hugues KAMBA MPIANA <hugues.kambampiana@arm.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>

kas/corstone1000-a320.yml

@@ -12,6 +12,8 @@ repos:
   meta-ethos:
     url: https://gitlab.arm.com/iot/meta-ethos.git
     branch: whinlatter
+    commit: aa2504a32f62d29caa17391d10c530576d27212e
   meta-sca:
     url: https://github.com/priv-kweihmann/meta-sca.git
     branch: master
+    commit: e68f1a9d17553a2a1b5b20962749f90482112a3f

kas/corstone1000-base.yml

@@ -10,16 +10,19 @@ defaults:
 repos:
   bitbake:
     url: https://git.openembedded.org/bitbake
+    commit: 0dde1a3ff852be057be40d17f233ecca19e7b389
     layers:
       bitbake: disabled
 
   core:
     url: https://git.openembedded.org/openembedded-core
+    commit: 4bd920ad7d7279020ea6e561d0584ae70f33f751
     layers:
       meta:
 
   meta-yocto:
     url: https://git.yoctoproject.org/meta-yocto
+    commit: b3b659263566c4d2f2813190e72d93f8598a4c47
     layers:
       meta-poky:
 
@@ -31,7 +34,7 @@ repos:
 
   meta-openembedded:
     url: https://git.openembedded.org/meta-openembedded
-    # commit: 461d85a1831318747af5abe86da193bcde3fd9b4
+    commit: fc0152e434307b98e1d16251f92ed81ac617c1db
     layers:
       meta-oe:
       meta-python:
@@ -39,7 +42,7 @@ repos:
 
   meta-secure-core:
     url: https://github.com/wind-river/meta-secure-core.git
-    # commit: 59d7e90542947c342098863b9998693ac79352b0
+    commit: 63209fb1500cee88d5d4d74669bce4b613c03ff7
     layers:
       meta-secure-core-common:
       meta-signing-key: