ARM i.MX irq: Compile avic irq code only on SoCs that need it

This patch adds a Kconfig option for the avic irq controller
and lets the SoCs that need it select this option.
Also, as we have two irq controllers for i.MX, irq.c is not
appropriate anymore, so rename it to avic.c

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 3 insertions, 2 deletions

diff --git a/arch/arm/plat-mxc/Makefile b/arch/arm/plat-mxc/Makefile
index 372670952789..989cb59e67ac 100644
--- a/arch/arm/plat-mxc/Makefile
+++ b/arch/arm/plat-mxc/Makefile
@@ -3,10 +3,11 @@
 #
 
 # Common support
-obj-y := irq.o clock.o gpio.o time.o devices.o cpu.o system.o
+obj-y := clock.o gpio.o time.o devices.o cpu.o system.o
 
-# MX51 uses the TZIC interrupt controller, older platforms use AVIC (irq.o)
+# MX51 uses the TZIC interrupt controller, older platforms use AVIC
 obj-$(CONFIG_MXC_TZIC) += tzic.o
+obj-$(CONFIG_MXC_AVIC) += avic.o
 
 obj-$(CONFIG_IMX_HAVE_IOMUX_V1) += iomux-v1.o
 obj-$(CONFIG_ARCH_MXC_IOMUX_V3) += iomux-v3.o