ARC: [plat-arcfpga] defconfig update

* Allow initramfs path to be symlink
* CONFIG_PREEMPT be default

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
diff --git a/arch/arc/configs/fpga_defconfig b/arch/arc/configs/fpga_defconfig
index b869806..95350be6 100644
--- a/arch/arc/configs/fpga_defconfig
+++ b/arch/arc/configs/fpga_defconfig
@@ -9,7 +9,7 @@
 # CONFIG_UTS_NS is not set
 # CONFIG_PID_NS is not set
 CONFIG_BLK_DEV_INITRD=y
-CONFIG_INITRAMFS_SOURCE="../arc_initramfs"
+CONFIG_INITRAMFS_SOURCE="../arc_initramfs/"
 CONFIG_KALLSYMS_ALL=y
 CONFIG_EMBEDDED=y
 # CONFIG_SLUB_DEBUG is not set
@@ -24,6 +24,7 @@
 CONFIG_ARC_BOARD_ML509=y
 # CONFIG_ARC_HAS_RTSC is not set
 CONFIG_ARC_BUILTIN_DTB_NAME="angel4"
+CONFIG_PREEMPT=y
 # CONFIG_COMPACTION is not set
 # CONFIG_CROSS_MEMORY_ATTACH is not set
 CONFIG_NET=y