project-lakitu: unmask audit flag and use it for building PAM

Unmask audit flag in project-lakitu's ARM64 profile. It's masked
on all non-x86 architectures in portage-stable, supposedly because
it wasn't tested.

Use audit flag for system-libs/pam dependency of cloud-audit-config

BUG=b/177594507
TEST=presubmit
RELEASE_NOTE=None

Change-Id: Ic04c1b65479fd3661e55f6845fb0ba941be168f4
Reviewed-on: https://cos-review.googlesource.com/c/cos/overlays/board-overlays/+/10840
Reviewed-by: Oleksandr Tymoshenko <ovt@google.com>
Tested-by: Oleksandr Tymoshenko <ovt@google.com>
diff --git a/project-lakitu/chromeos-base/cloud-audit-config/cloud-audit-config-0.0.1-r11.ebuild b/project-lakitu/chromeos-base/cloud-audit-config/cloud-audit-config-0.0.1-r12.ebuild
similarity index 100%
rename from project-lakitu/chromeos-base/cloud-audit-config/cloud-audit-config-0.0.1-r11.ebuild
rename to project-lakitu/chromeos-base/cloud-audit-config/cloud-audit-config-0.0.1-r12.ebuild
diff --git a/project-lakitu/chromeos-base/cloud-audit-config/cloud-audit-config-0.0.1.ebuild b/project-lakitu/chromeos-base/cloud-audit-config/cloud-audit-config-0.0.1.ebuild
index 4dbf3e2..740818c 100644
--- a/project-lakitu/chromeos-base/cloud-audit-config/cloud-audit-config-0.0.1.ebuild
+++ b/project-lakitu/chromeos-base/cloud-audit-config/cloud-audit-config-0.0.1.ebuild
@@ -15,13 +15,10 @@
 
 S=${WORKDIR}
 
-# TODO: "sys-libs/pam[audit]" does not work for ARM64 for now. Re-enable
-#       "[audit]" once this is fixed. http://b/177594507 .
 RDEPEND="
 	net-firewall/iptables
 	sys-auth/pambase
-	!arm64? ( sys-libs/pam[audit] )
-	arm64? ( sys-libs/pam )
+	sys-libs/pam[audit]
 	sys-process/audit
 "
 
diff --git a/project-lakitu/profiles/arch/arm64/use.mask b/project-lakitu/profiles/arch/arm64/use.mask
new file mode 100644
index 0000000..f37c60f
--- /dev/null
+++ b/project-lakitu/profiles/arch/arm64/use.mask
@@ -0,0 +1,3 @@
+# audit is masked (as not tested) for all non-x86 platforms in portage-stable.
+# Might not be required once portages version is updated.
+-audit