fix(cros-bootkernel/x86_64_defconfig_boot) disable some filesystems

The boot kernel does not need aufs, xfs, btrfs, or vfat, so disable them
all.

sdk_container/src/third_party/coreos-overlay/eclass/cros-kernel/x86_64_defconfig_boot

@@ -160,8 +160,11 @@ CONFIG_CHECKPOINT_RESTORE=y
 CONFIG_NAMESPACES=y
 CONFIG_UTS_NS=y
 CONFIG_IPC_NS=y
+# CONFIG_USER_NS is not set
 CONFIG_PID_NS=y
 CONFIG_NET_NS=y
+CONFIG_UIDGID_CONVERTED=y
+# CONFIG_UIDGID_STRICT_TYPE_CHECKS is not set
 CONFIG_SCHED_AUTOGROUP=y
 CONFIG_MM_OWNER=y
 # CONFIG_SYSFS_DEPRECATED is not set
@@ -1949,16 +1952,10 @@ CONFIG_JBD2=y
 CONFIG_FS_MBCACHE=y
 # CONFIG_REISERFS_FS is not set
 # CONFIG_JFS_FS is not set
-CONFIG_XFS_FS=m
+# CONFIG_XFS_FS is not set
-# CONFIG_XFS_QUOTA is not set
-# CONFIG_XFS_POSIX_ACL is not set
-# CONFIG_XFS_RT is not set
-# CONFIG_XFS_DEBUG is not set
 # CONFIG_GFS2_FS is not set
 # CONFIG_OCFS2_FS is not set
-CONFIG_BTRFS_FS=m
+# CONFIG_BTRFS_FS is not set
-# CONFIG_BTRFS_FS_POSIX_ACL is not set
-# CONFIG_BTRFS_FS_CHECK_INTEGRITY is not set
 # CONFIG_NILFS2_FS is not set
 CONFIG_FS_POSIX_ACL=y
 CONFIG_EXPORTFS=y
@@ -1997,11 +1994,8 @@ CONFIG_ZISOFS=y
 #
 # DOS/FAT/NT Filesystems
 #
-CONFIG_FAT_FS=m
 # CONFIG_MSDOS_FS is not set
-CONFIG_VFAT_FS=m
+# CONFIG_VFAT_FS is not set
-CONFIG_FAT_DEFAULT_CODEPAGE=437
-CONFIG_FAT_DEFAULT_IOCHARSET="ascii"
 # CONFIG_NTFS_FS is not set
 
 #
@@ -2045,22 +2039,7 @@ CONFIG_PSTORE=y
 # CONFIG_SYSV_FS is not set
 # CONFIG_UFS_FS is not set
 # CONFIG_F2FS_FS is not set
-CONFIG_AUFS_FS=y
+# CONFIG_AUFS_FS is not set
-CONFIG_AUFS_BRANCH_MAX_127=y
-# CONFIG_AUFS_BRANCH_MAX_511 is not set
-# CONFIG_AUFS_BRANCH_MAX_1023 is not set
-# CONFIG_AUFS_BRANCH_MAX_32767 is not set
-CONFIG_AUFS_SBILIST=y
-# CONFIG_AUFS_HNOTIFY is not set
-# CONFIG_AUFS_EXPORT is not set
-# CONFIG_AUFS_RDU is not set
-# CONFIG_AUFS_PROC_MAP is not set
-# CONFIG_AUFS_SP_IATTR is not set
-# CONFIG_AUFS_SHWH is not set
-# CONFIG_AUFS_BR_RAMFS is not set
-# CONFIG_AUFS_BR_FUSE is not set
-CONFIG_AUFS_BDEV_LOOP=y
-# CONFIG_AUFS_DEBUG is not set
 # CONFIG_NETWORK_FILESYSTEMS is not set
 CONFIG_NLS=y
 CONFIG_NLS_DEFAULT="utf8"
@@ -2296,7 +2275,6 @@ CONFIG_KEYS_DEBUG_PROC_KEYS=y
 CONFIG_SECURITYFS=y
 CONFIG_DEFAULT_SECURITY_DAC=y
 CONFIG_DEFAULT_SECURITY=""
-CONFIG_XOR_BLOCKS=m
 CONFIG_CRYPTO=y
 
 #
@@ -2436,7 +2414,6 @@ CONFIG_BINARY_PRINTF=y
 #
 # Library routines
 #
-CONFIG_RAID6_PQ=m
 CONFIG_BITREVERSE=y
 CONFIG_GENERIC_STRNCPY_FROM_USER=y
 CONFIG_GENERIC_STRNLEN_USER=y
@@ -2460,8 +2437,6 @@ CONFIG_LIBCRC32C=m
 # CONFIG_CRC8 is not set
 CONFIG_ZLIB_INFLATE=y
 CONFIG_ZLIB_DEFLATE=m
-CONFIG_LZO_COMPRESS=m
-CONFIG_LZO_DECOMPRESS=m
 CONFIG_XZ_DEC=y
 CONFIG_XZ_DEC_X86=y
 CONFIG_XZ_DEC_POWERPC=y