ARM: remove global cr_no_alignment

cr_no_alignment is really only used by the alignment code.  Since we no
longer change the setting of cr_alignment after boot, we can localise
this to alignment.c

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mm/alignment.c

@@ -82,6 +82,7 @@ static unsigned long ai_word;
 static unsigned long ai_dword;
 static unsigned long ai_multi;
 static int ai_usermode;
+static unsigned long cr_no_alignment;
 
 core_param(alignment, ai_usermode, int, 0600);
 
@@ -979,6 +980,8 @@ static int __init alignment_init(void)
 		ai_usermode = safe_usermode(ai_usermode, false);
 	}
 
+	cr_no_alignment = get_cr() & ~CR_A;
+
 	hook_fault_code(FAULT_CODE_ALIGNMENT, do_alignment, SIGBUS, BUS_ADRALN,
 			"alignment exception");