optimus: restore printk persist config

Change-Id: Idf8d26ec2d766426c38b83428116885689da07df
diff --git a/arch/arm/configs/gfrg200_defconfig b/arch/arm/configs/gfrg200_defconfig
index 3f79115..110ad5a 100644
--- a/arch/arm/configs/gfrg200_defconfig
+++ b/arch/arm/configs/gfrg200_defconfig
@@ -284,7 +284,7 @@
 CONFIG_NLS_ISO8859_1=y
 CONFIG_NLS_UTF8=y
 CONFIG_PRINTK_TIME=y
-CONFIG_PRINTK_PERSIST=n
+CONFIG_PRINTK_PERSIST=y
 CONFIG_BOOTLOG_COPY=y
 CONFIG_FRAME_WARN=2048
 CONFIG_MAGIC_SYSRQ=y