x86/fpu: Rename fpstate_xstate_init_size() to fpu__init_system_xstate_size_legacy()

To bring it in line with the other init_system*() methods.
Reviewed-by: Borislav Petkov <bp@alien8.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

arch/x86/kernel/fpu/init.c

@@ -83,7 +83,7 @@ static void fpu__init_system_generic(void)
 	fpu__init_system_mxcsr();
 }
 
-static void fpstate_xstate_init_size(void)
+static void fpu__init_system_xstate_size_legacy(void)
 {
 	static bool on_boot_cpu = 1;
 
@@ -218,7 +218,7 @@ void fpu__init_system(struct cpuinfo_x86 *c)
 	clts();
 
 	fpu__init_system_generic();
-	fpstate_xstate_init_size();
+	fpu__init_system_xstate_size_legacy();
 	fpu__init_system_xstate();
 
 	fpu__init_system_ctx_switch();