[ARM] Move enable_irq and disable_irq to assembler.h

5d25ac038a317d454a4321cba955f756400835a5 broke VFP builds due to
enable_irq not being defined as an assembly macro.  Move it to
assembler.h so everyone can use it.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/include/asm-arm/assembler.h b/include/asm-arm/assembler.h
index f31ac92..d53bafa 100644
--- a/include/asm-arm/assembler.h
+++ b/include/asm-arm/assembler.h
@@ -80,16 +80,33 @@
 	instr	regs
 
 /*
+ * Enable and disable interrupts
+ */
+#if __LINUX_ARM_ARCH__ >= 6
+	.macro	disable_irq
+	cpsid	i
+	.endm
+
+	.macro	enable_irq
+	cpsie	i
+	.endm
+#else
+	.macro	disable_irq
+	msr	cpsr_c, #PSR_I_BIT | SVC_MODE
+	.endm
+
+	.macro	enable_irq
+	msr	cpsr_c, #SVC_MODE
+	.endm
+#endif
+
+/*
  * Save the current IRQ state and disable IRQs.  Note that this macro
  * assumes FIQs are enabled, and that the processor is in SVC mode.
  */
 	.macro	save_and_disable_irqs, oldcpsr
 	mrs	\oldcpsr, cpsr
-#if __LINUX_ARM_ARCH__ >= 6
-	cpsid	i
-#else
-	msr	cpsr_c, #PSR_I_BIT | MODE_SVC
-#endif
+	disable_irq
 	.endm
 
 /*