Blackfin: Rename IRQ flags handling functions

Rename h/w IRQ flags handling functions to be in line with what is expected for
the irq renaming patch.  This renames local_*_hw() to hard_local_*() using the
following perl command:

	perl -pi -e 's/local_irq_(restore|enable|disable)_hw/hard_local_irq_\1/ or s/local_irq_save_hw([_a-z]*)[(]flags[)]/flags = hard_local_irq_save\1()/' `find arch/blackfin/ -name "*.[ch]"`

and then fixing up asm/irqflags.h manually.

Additionally, arch/hard_local_save_flags() and arch/hard_local_irq_save() both
return the flags rather than passing it through the argument list.

Signed-off-by: David Howells <dhowells@redhat.com>
diff --git a/arch/blackfin/include/asm/system.h b/arch/blackfin/include/asm/system.h
index dde19b1..19e2c7c 100644
--- a/arch/blackfin/include/asm/system.h
+++ b/arch/blackfin/include/asm/system.h
@@ -117,7 +117,7 @@
 	unsigned long tmp = 0;
 	unsigned long flags;
 
-	local_irq_save_hw(flags);
+	flags = hard_local_irq_save();
 
 	switch (size) {
 	case 1:
@@ -139,7 +139,7 @@
 			 : "=&d" (tmp) : "d" (x), "m" (*__xg(ptr)) : "memory");
 		break;
 	}
-	local_irq_restore_hw(flags);
+	hard_local_irq_restore(flags);
 	return tmp;
 }