[POWERPC] Don't store a command line in the Holly device tree

Currently, the Holly device tree includes a bootargs property in
/chosen, which gives a commandline.  This is somewhat inconvenient,
because it means an alternative default command line can't be given in
the kernel config - the value obtained from the dts via the
bootwrapper will always override CONFIG_CMDLINE.

This removes the command line from the dts, and instead puts the
same command line as a default in holly_defconfig.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/boot/dts/holly.dts b/arch/powerpc/boot/dts/holly.dts
index 254499b..e6b5091 100644
--- a/arch/powerpc/boot/dts/holly.dts
+++ b/arch/powerpc/boot/dts/holly.dts
@@ -193,6 +193,5 @@
 
 	chosen {
 		linux,stdout-path = "/tsi109@c0000000/serial@7808";
-		bootargs = "console=ttyS0,115200";
 	};
 };
diff --git a/arch/powerpc/configs/holly_defconfig b/arch/powerpc/configs/holly_defconfig
index be633b9..8ad57b9 100644
--- a/arch/powerpc/configs/holly_defconfig
+++ b/arch/powerpc/configs/holly_defconfig
@@ -182,7 +182,8 @@
 # CONFIG_RESOURCES_64BIT is not set
 CONFIG_ZONE_DMA_FLAG=1
 CONFIG_PROC_DEVICETREE=y
-# CONFIG_CMDLINE_BOOL is not set
+CONFIG_CMDLINE_BOOL=y
+CONFIG_CMDLINE="console=ttyS0,115200"
 # CONFIG_PM is not set
 # CONFIG_SECCOMP is not set
 # CONFIG_WANT_DEVICE_TREE is not set