sw64: rename CONFIG_HAVE_GENERIC_GUP to CONFIG_HAVE_FAST_GUP

Sunway inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I5GFRP



--------------------------------

This patch is a backport of commit 67a929e0 ("mm: rename
CONFIG_HAVE_GENERIC_GUP to CONFIG_HAVE_FAST_GUP"). In order to
use the generic GUP, let's do the same.

Signed-off-by: Gu Zitao <guzitao@wxiat.com>

Signed-off-by: Gu Zitao <guzitao@wxiat.com>