[PATCH] m32r: fix build warning

[Sudip Mukherjee <sudipm.mukherjee@gmail.com>]

While building m32r defconfig we got warnings:

arch/m32r/platforms/m32700ut/setup.c:249:24: warning:
  'm32700ut_lcdpld_irq_type' defined but not used [-Wunused-variable]

m32700ut_lcdpld_irq_type is only used when CONFIG_USB is enabled.
Modify the code to declare the related variables and functions only
when CONFIG_USB is enabled.

Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
---

build log is at:
https://travis-ci.org/sudipm-mukherjee/parport/jobs/175943814

 arch/m32r/platforms/m32700ut/setup.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/m32r/platforms/m32700ut/setup.c b/arch/m32r/platforms/m32700ut/setup.c
index 9a4ba8a..349eb34 100644
--- a/arch/m32r/platforms/m32700ut/setup.c
+++ b/arch/m32r/platforms/m32700ut/setup.c
@@ -201,6 +201,7 @@ static void shutdown_m32700ut_lanpld(struct irq_data *data)
 #define lcdpldirq2port(x)	(unsigned long)((int)M32700UT_LCD_ICUCR1 + \
 				 (((x) - 1) * sizeof(unsigned short)))
 
+#ifdef CONFIG_USB
 static pld_icu_data_t lcdpld_icu_data[M32700UT_NUM_LCD_PLD_IRQ];
 
 static void disable_m32700ut_lcdpld_irq(unsigned int irq)
@@ -253,6 +254,7 @@ static void shutdown_m32700ut_lcdpld(struct irq_data *data)
 	.irq_mask	= mask_m32700ut_lcdpld,
 	.irq_unmask	= unmask_m32700ut_lcdpld,
 };
+#endif
 
 void __init init_IRQ(void)
 {
-- 
1.9.1