!757 openEuler supports bcache by default on x86 platforms

Merge Pull Request from: @Tom_zc 
 
To fix issue about https://gitee.com/openeuler/kernel/issues/I6N4EP?from=project-issue
and test report is in here: https://gitee.com/Tom_zc/my_doc/blob/master/kernel%E7%A4%BE%E5%8C%BA/%E9%AA%8C%E8%AF%81openEuler%E7%BC%96%E8%AF%91%E6%94%AF%E6%8C%81bcache.md 
 
Link:https://gitee.com/openeuler/kernel/pulls/757 

Reviewed-by: Liu Chao <liuchao173@huawei.com> 
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com> 

arch/x86/configs/openeuler_defconfig

@@ -2522,7 +2522,10 @@ CONFIG_MD_RAID456=m
 # CONFIG_MD_MULTIPATH is not set
 CONFIG_MD_FAULTY=m
 # CONFIG_MD_CLUSTER is not set
-# CONFIG_BCACHE is not set
+CONFIG_BCACHE=m
+# CONFIG_BCACHE_DEBUG is not set
+# CONFIG_BCACHE_CLOSURES_DEBUG is not set
+# CONFIG_BCACHE_ASYNC_REGISTRATION is not set
 CONFIG_BLK_DEV_DM_BUILTIN=y
 CONFIG_BLK_DEV_DM=m
 CONFIG_DM_DEBUG=y
@@ -8029,7 +8032,7 @@ CONFIG_CRC32_SLICEBY8=y
 # CONFIG_CRC32_SLICEBY4 is not set
 # CONFIG_CRC32_SARWATE is not set
 # CONFIG_CRC32_BIT is not set
-# CONFIG_CRC64 is not set
+CONFIG_CRC64=m
 # CONFIG_CRC4 is not set
 CONFIG_CRC7=m
 CONFIG_LIBCRC32C=m