n9: fix for no boot when boot loader passes omapdss.def_disp_enabled=1

When bootloader passes omapdss.def_disp_enabled=1 to kernel it's saying
"no need to reset the default display - I did it already". For some
reason this causes booting to fail.
By commenting out module parameter kernel always resets display on boot
and that fixes the problem. This allows for removing CONFIG_CMDLINE_FORCE=y
and getting in all other parameters bootloader provides (battery info, mtd
partitions...)

Signed-off-by: Filip Matijević <filip.matijevic.pz@gmail.com>

arch/arm/configs/n9_mer_defconfig

@@ -486,7 +486,7 @@ CONFIG_ZBOOT_ROM_BSS=0x0
 CONFIG_CMDLINE="root=/dev/mmcblk0p4 rootwait console=ttyO2,115200"
 # CONFIG_CMDLINE_FROM_BOOTLOADER is not set
 # CONFIG_CMDLINE_EXTEND is not set
-CONFIG_CMDLINE_FORCE=y
+# CONFIG_CMDLINE_FORCE is not set
 # CONFIG_XIP_KERNEL is not set
 CONFIG_KEXEC=y
 CONFIG_ATAGS_PROC=y

drivers/video/omap2/dss/core.c

@@ -69,9 +69,10 @@ MODULE_PARM_DESC(def_disp_name, "default display name");
  * boot up, by bootloader.
  * Parameter full name is omapdss.def_disp_enabled.
  */
-static unsigned int def_disp_enabled;
+static unsigned int def_disp_enabled=0;
+/* FIXME ubiboot passes omapdss.def_disp_enabled=1 but that prevents kernel from booting
 module_param(def_disp_enabled, bool, 0);
-MODULE_PARM_DESC(def_disp_enabled, "default display is enabled");
+MODULE_PARM_DESC(def_disp_enabled, "default display is enabled");*/
 
 #ifdef DEBUG
 unsigned int dss_debug;