Blackfin arch: merge adeos blackfin part to arch/blackfin/

[Mike Frysinger <vapier.adi@gmail.com>:
 - handle bf531/bf532/bf534/bf536 variants in ipipe.h
 - cleanup IPIPE logic for bfin_set_irq_handler()
 - cleanup ipipe asm code a bit and add missing ENDPROC()
 - simplify IPIPE code in trap_c
 - unify some of the IPIPE code and fix style
 - simplify DO_IRQ_L1 handling with ipipe code
 - revert IRQ_SW_INT# addition from ipipe merge
 - remove duplicate get_{c,s}clk() prototypes
]

Signed-off-by: Yi Li <yi.li@analog.com>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

arch/blackfin/kernel/process.c

@@ -82,11 +82,14 @@ void cpu_idle(void)__attribute__((l1_text));
  */
 static void default_idle(void)
 {
-	local_irq_disable();
+#ifdef CONFIG_IPIPE
+	ipipe_suspend_domain();
+#endif
+	local_irq_disable_hw();
 	if (!need_resched())
 		idle_with_irq_disabled();
 
-	local_irq_enable();
+	local_irq_enable_hw();
 }
 
 /*