ARM: VIC: remove non MULTI_IRQ_HANDLER support

Now that all platforms are converted to MULTI_IRQ_HANDLER, remove the
legacy support.

Tested-by: Thomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
diff --git a/arch/arm/common/Kconfig b/arch/arm/common/Kconfig
index 10ca974..81a933e 100644
--- a/arch/arm/common/Kconfig
+++ b/arch/arm/common/Kconfig
@@ -8,6 +8,7 @@
 
 config ARM_VIC
 	select IRQ_DOMAIN
+	select MULTI_IRQ_HANDLER
 	bool
 
 config ARM_VIC_NR
diff --git a/arch/arm/common/vic.c b/arch/arm/common/vic.c
index 0a69547..6ed41ec 100644
--- a/arch/arm/common/vic.c
+++ b/arch/arm/common/vic.c
@@ -430,7 +430,6 @@
 }
 #endif /* CONFIG OF */
 
-#ifdef CONFIG_MULTI_IRQ_HANDLER
 /*
  * Handle each interrupt in a single VIC.  Returns non-zero if we've
  * handled at least one interrupt.  This does a single read of the
@@ -465,4 +464,3 @@
 			handled |= handle_one_vic(&vic_devices[i], regs);
 	} while (handled);
 }
-#endif /* CONFIG_MULTI_IRQ_HANDLER */