Add initrd support to all kernel configs.

chromeos/config/armel/config.common.armel

 #
 # Config options generated by splitconfig
 #
 CONFIG_AEABI=y
 # CONFIG_AFS_FS is not set
 CONFIG_ALIGNMENT_TRAP=y
 # CONFIG_APM_EMULATION is not set
 # CONFIG_ARCH_AAEC2000 is not set
 # CONFIG_ARCH_AT91 is not set
 # CONFIG_ARCH_BCMRING is not set
@@ skipping 44 matching lines @@
 # CONFIG_ARCH_W90X900 is not set
 CONFIG_ARM=y
 CONFIG_ARM_THUMB=y
 CONFIG_ARM_UNWIND=y
 # CONFIG_ATA is not set
 # CONFIG_AUDIT is not set
 # CONFIG_AX88796 is not set
 # CONFIG_BACKLIGHT_LCD_SUPPORT is not set
 # CONFIG_BINFMT_MISC is not set
 # CONFIG_BLK_DEV_BSG is not set
-CONFIG_BLK_DEV_INITRD=y
 # CONFIG_BLK_DEV_IO_TRACE is not set
 # CONFIG_BOOT_TRACER is not set
 CONFIG_BRANCH_PROFILE_NONE=y
 CONFIG_BROKEN_ON_SMP=y
 # CONFIG_BSD_PROCESS_ACCT is not set
 # CONFIG_BT_HCIBTSDIO is not set
 # CONFIG_CGROUPS is not set
 # CONFIG_CIFS is not set
 # CONFIG_CODA_FS is not set
 CONFIG_COMPAT_BRK=y
@@ skipping 33 matching lines @@
 # CONFIG_DEBUG_FS is not set
 # CONFIG_DEBUG_ICEDCC is not set
 CONFIG_DEBUG_INFO=y
 CONFIG_DEBUG_LL=y
 CONFIG_DEBUG_MEMORY_INIT=y
 CONFIG_DEBUG_MUTEXES=y
 # CONFIG_DEBUG_SLAB is not set
 CONFIG_DEBUG_SPINLOCK_SLEEP=y
 # CONFIG_DEBUG_STACK_USAGE is not set
 CONFIG_DECOMPRESS_BZIP2=y
-CONFIG_DECOMPRESS_GZIP=y
 CONFIG_DECOMPRESS_LZMA=y
 CONFIG_DEFAULT_SECURITY=""
 CONFIG_DEFAULT_SECURITY_DAC=y
 # CONFIG_DEFAULT_SECURITY_TOMOYO is not set
 # CONFIG_DM9000 is not set
 # CONFIG_DNET is not set
 CONFIG_DNOTIFY=y
 # CONFIG_DS1682 is not set
 # CONFIG_EEPROM_93CX6 is not set
 # CONFIG_EEPROM_AT24 is not set
@@ skipping 19 matching lines @@
 # CONFIG_HIDRAW is not set
 # CONFIG_HID_PID is not set
 CONFIG_HID_WACOM=m
 # CONFIG_HIGHMEM is not set
 # CONFIG_HUGETLB_PAGE is not set
 # CONFIG_HWMON is not set
 # CONFIG_I2C_CHARDEV is not set
 # CONFIG_I2C_OCORES is not set
 # CONFIG_I2C_PCA_PLATFORM is not set
 # CONFIG_I2C_SIMTEC is not set
-CONFIG_INITRAMFS_SOURCE=""
 # CONFIG_INPUT_ATI_REMOTE is not set
 # CONFIG_INPUT_ATI_REMOTE2 is not set
 # CONFIG_INPUT_CM109 is not set
 # CONFIG_INPUT_FF_MEMLESS is not set
 # CONFIG_INPUT_KEYSPAN_REMOTE is not set
 # CONFIG_INPUT_MOUSE is not set
 # CONFIG_INPUT_POLLDEV is not set
 # CONFIG_INPUT_POWERMATE is not set
 # CONFIG_INPUT_TABLET is not set
 # CONFIG_INPUT_UINPUT is not set
@@ skipping 40 matching lines @@
 # CONFIG_POWER_SUPPLY is not set
 # CONFIG_PPP_FILTER is not set
 # CONFIG_PPP_SYNC_TTY is not set
 CONFIG_PREEMPT=y
 # CONFIG_PREEMPT_VOLUNTARY is not set
 # CONFIG_PRINTK_TIME is not set
 # CONFIG_PROFILE_ALL_BRANCHES is not set
 # CONFIG_PROFILE_ANNOTATED_BRANCHES is not set
 # CONFIG_PROFILING is not set
 CONFIG_RD_BZIP2=y
-CONFIG_RD_GZIP=y
 CONFIG_RD_LZMA=y
 # CONFIG_RELAY is not set
 # CONFIG_RFKILL is not set
 # CONFIG_RTC_CLASS is not set
 CONFIG_RWSEM_GENERIC_SPINLOCK=y
 CONFIG_SCHED_DEBUG=y
 # CONFIG_SCHED_TRACER is not set
 # CONFIG_SECURITY is not set
 # CONFIG_SECURITYFS is not set
 # CONFIG_SECURITY_FILE_CAPABILITIES is not set
@@ skipping 39 matching lines @@
 # CONFIG_USB_ARCH_HAS_OHCI is not set
 # CONFIG_USER_NS is not set
 # CONFIG_UTS_NS is not set
 CONFIG_VECTORS_BASE=0xffff0000
 CONFIG_VERSION_SIGNATURE=""
 # CONFIG_VGA_CONSOLE is not set
 CONFIG_VMSPLIT_3G=y
 # CONFIG_WORKQUEUE_TRACER is not set
 # CONFIG_XIP_KERNEL is not set
 CONFIG_ZONE_DMA_FLAG=0