arm/omap: use generic_file_llseek in iommu_debug

In future kernels, debugfs files need to specify
the llseek operation explicitly to allow seeking.
This sets the llseek operation in the omap iommu
debugfs files to generic_file_llseek, which is
appropriate for files using simple_read_from_buffer.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Tony Lindgren <tony@atomide.com>
Cc: linux-omap@vger.kernel.org

arch/arm/plat-omap/iommu-debug.c

@@ -328,12 +328,14 @@ static int debug_open_generic(struct inode *inode, struct file *file)
 		.open = debug_open_generic,				\
 		.read = debug_read_##name,				\
 		.write = debug_write_##name,				\
+		.llseek = generic_file_llseek,				\
 	};
 
 #define DEBUG_FOPS_RO(name)						\
 	static const struct file_operations debug_##name##_fops = {	\
 		.open = debug_open_generic,				\
 		.read = debug_read_##name,				\
+		.llseek = generic_file_llseek,				\
 	};
 
 DEBUG_FOPS_RO(ver);