x86: fix typo in enable_mtrr_cleanup early parameter

Correct typo for 'enable_mtrr_cleanup' early boot param name.

Signed-off-by: J.A. Magallon <[e-mail]>
Signed-off-by: Ingo Molnar <[e-mail]>

arch/x86/kernel/cpu/mtrr/main.c

···
 		enable_mtrr_cleanup = 1;
 	return 0;
 }
-early_param("enble_mtrr_cleanup", enable_mtrr_cleanup_setup);
+early_param("enable_mtrr_cleanup", enable_mtrr_cleanup_setup);
 
 struct var_mtrr_state {
 	unsigned long	range_startk;