Add CONFIG_SEQ for atstk1002 busybox
diff --git a/target/device/Atmel/atstk1002/busybox-1.6.1.config b/target/device/Atmel/atstk1002/busybox-1.6.1.config
index ce0a9f2..bef8649 100644
--- a/target/device/Atmel/atstk1002/busybox-1.6.1.config
+++ b/target/device/Atmel/atstk1002/busybox-1.6.1.config
@@ -193,7 +193,7 @@
 # CONFIG_REALPATH is not set
 CONFIG_RM=y
 CONFIG_RMDIR=y
-# CONFIG_SEQ is not set
+CONFIG_SEQ=y
 CONFIG_SHA1SUM=y
 CONFIG_SLEEP=y
 # CONFIG_FEATURE_FANCY_SLEEP is not set