Export all constants for `linux_bionic`

They need to be referenced in adding a `linux_bionic` Bazel cc_toolchain

Test: CI
Bug: 205771732
Change-Id: I5469eac5559cdf76e02fdeccaf496e5ffcc1b08e
diff --git a/cc/config/arm64_linux_host.go b/cc/config/arm64_linux_host.go
index 2d316e6..9f5124b 100644
--- a/cc/config/arm64_linux_host.go
+++ b/cc/config/arm64_linux_host.go
@@ -58,8 +58,8 @@
 )
 
 func init() {
-	pctx.StaticVariable("LinuxBionicArm64Cflags", strings.Join(linuxCrossCflags, " "))
-	pctx.StaticVariable("LinuxBionicArm64Ldflags", strings.Join(linuxCrossLdflags, " "))
+	exportedVars.ExportStringListStaticVariable("LinuxBionicArm64Cflags", linuxCrossCflags)
+	exportedVars.ExportStringListStaticVariable("LinuxBionicArm64Ldflags", linuxCrossLdflags)
 }
 
 // toolchain config for ARM64 Linux CrossHost. Almost everything is the same as the ARM64 Android
diff --git a/cc/config/x86_linux_bionic_host.go b/cc/config/x86_linux_bionic_host.go
index 96a53bf..e006471 100644
--- a/cc/config/x86_linux_bionic_host.go
+++ b/cc/config/x86_linux_bionic_host.go
@@ -15,8 +15,6 @@
 package config
 
 import (
-	"strings"
-
 	"android/soong/android"
 )
 
@@ -71,14 +69,13 @@
 )
 
 func init() {
-
-	pctx.StaticVariable("LinuxBionicCflags", strings.Join(linuxBionicCflags, " "))
-	pctx.StaticVariable("LinuxBionicLdflags", strings.Join(linuxBionicLdflags, " "))
-	pctx.StaticVariable("LinuxBionicLldflags", strings.Join(linuxBionicLdflags, " "))
+	exportedVars.ExportStringListStaticVariable("LinuxBionicCflags", linuxBionicCflags)
+	exportedVars.ExportStringListStaticVariable("LinuxBionicLdflags", linuxBionicLdflags)
+	exportedVars.ExportStringListStaticVariable("LinuxBionicLldflags", linuxBionicLdflags)
 
 	// Use the device gcc toolchain for now
-	pctx.StaticVariable("LinuxBionicGccVersion", x86_64GccVersion)
-	pctx.SourcePathVariable("LinuxBionicGccRoot",
+	exportedVars.ExportStringStaticVariable("LinuxBionicGccVersion", x86_64GccVersion)
+	exportedVars.ExportSourcePathVariable("LinuxBionicGccRoot",
 		"prebuilts/gcc/${HostPrebuiltTag}/x86/x86_64-linux-android-${LinuxBionicGccVersion}")
 }