x86/fpu: Fix KABI broken caused by introducing of guest permissions in struct fpu

category: bugfix
bugzilla: https://gitee.com/openeuler/intel-kernel/issues/I5RQLJ


CVE: NA

Intel-SIG: x86/fpu: Fix KABI broken caused by introducing of guest
permissions in struct fpu.

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

Using KABI_EXTEND macro to avoid kabi change caused by the commit:
980fe2fd x86/fpu: Extend fpu_xstate_prctl() with guest permissions

Signed-off-by: Lin Wang <lin.x.wang@intel.com>