x86/lib: Address kernel-doc warnings

Fix all kernel-doc warnings in csum-wrappers_64.c:

  arch/x86/lib/csum-wrappers_64.c:25: warning: Excess function parameter 'isum' description in 'csum_and_copy_from_user'
  arch/x86/lib/csum-wrappers_64.c:25: warning: Excess function parameter 'errp' description in 'csum_and_copy_from_user'
  arch/x86/lib/csum-wrappers_64.c:49: warning: Excess function parameter 'isum' description in 'csum_and_copy_to_user'
  arch/x86/lib/csum-wrappers_64.c:49: warning: Excess function parameter 'errp' description in 'csum_and_copy_to_user'
  arch/x86/lib/csum-wrappers_64.c:71: warning: Excess function parameter 'sum' description in 'csum_partial_copy_nocheck'

Signed-off-by: Zhu Wang <wangzhu9@huawei.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: linux-kernel@vger.kernel.org

Author: PeterZhu789

arch/x86/lib/csum-wrappers_64.c

@@ -14,8 +14,6 @@
  * @src: source address (user space)
  * @dst: destination address
  * @len: number of bytes to be copied.
- * @isum: initial sum that is added into the result (32bit unfolded)
- * @errp: set to -EFAULT for an bad source address.
  *
  * Returns an 32bit unfolded checksum of the buffer.
  * src and dst are best aligned to 64bits.
@@ -38,8 +36,6 @@ csum_and_copy_from_user(const void __user *src, void *dst, int len)
  * @src: source address
  * @dst: destination address (user space)
  * @len: number of bytes to be copied.
- * @isum: initial sum that is added into the result (32bit unfolded)
- * @errp: set to -EFAULT for an bad destination address.
  *
  * Returns an 32bit unfolded checksum of the buffer.
  * src and dst are best aligned to 64bits.
@@ -62,7 +58,6 @@ csum_and_copy_to_user(const void *src, void __user *dst, int len)
  * @src: source address
  * @dst: destination address
  * @len: number of bytes to be copied.
- * @sum: initial sum that is added into the result (32bit unfolded)
  *
  * Returns an 32bit unfolded checksum of the buffer.
  */