Add symlinks for id(1) and whoami(1).

Test: builds
Change-Id: I05e09801799843393c8d71f2569580608eafbf95
diff --git a/toybox/linux-x86/id b/toybox/linux-x86/id
new file mode 120000
index 0000000..c6b4b1f
--- /dev/null
+++ b/toybox/linux-x86/id
@@ -0,0 +1 @@
+../../linux-x86/bin/toybox
\ No newline at end of file
diff --git a/toybox/linux-x86/whoami b/toybox/linux-x86/whoami
new file mode 120000
index 0000000..c6b4b1f
--- /dev/null
+++ b/toybox/linux-x86/whoami
@@ -0,0 +1 @@
+../../linux-x86/bin/toybox
\ No newline at end of file