[PATCH 3.3 v2] I2C: OMAP: fix build breakage when CONFIG_OF is not set

[Luciano Coelho <coelho@ti.com>]

Since commit 6145197 (i2c: OMAP: Add DT support for i2c controller),
building i2c_omap.c breaks if CONFIG_OF is not set:

drivers/i2c/busses/i2c-omap.c: In function 'omap_i2c_probe':
drivers/i2c/busses/i2c-omap.c:1021: error: 'omap_i2c_of_match' undeclared (first use in this function)
drivers/i2c/busses/i2c-omap.c:1021: error: (Each undeclared identifier is reported only once
drivers/i2c/busses/i2c-omap.c:1021: error: for each function it appears in.)

This is because the definition of omap_i2c_of_match is #ifdef'd on
CONFIG_OF, but the usage of it is not.

Since the places where omap_ic2_of_match are prepared to get NULL
pointers if CONFIG_OF is not defined, we can simply define it to NULL.

Cc: Benoit Cousson <b-cousson@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
---
v2: changed the commit log to use abbrev sha and include the commit subject

 drivers/i2c/busses/i2c-omap.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index f713eac..fd200eb 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -979,6 +979,8 @@ static const struct of_device_id omap_i2c_of_match[] = {
 	{ },
 };
 MODULE_DEVICE_TABLE(of, omap_i2c_of_match);
+#else
+static const struct of_device_id *omap_i2c_of_match = NULL;
 #endif
 
 static int __devinit
-- 
1.7.5.4