i2c: slave eeprom: clean up sysfs bin attribute read()/write()

The change removes redundant sysfs binary file boundary checks,
since this task is already done on caller side in fs/sysfs/file.c

Note, on file size overflow read() now returns 0, and this is a
correct and expected EOF notification according to POSIX.

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
diff --git a/drivers/i2c/i2c-slave-eeprom.c b/drivers/i2c/i2c-slave-eeprom.c
index 8223746..1da4496 100644
--- a/drivers/i2c/i2c-slave-eeprom.c
+++ b/drivers/i2c/i2c-slave-eeprom.c
@@ -80,9 +80,6 @@
 	struct eeprom_data *eeprom;
 	unsigned long flags;
 
-	if (off + count > attr->size)
-		return -EFBIG;
-
 	eeprom = dev_get_drvdata(container_of(kobj, struct device, kobj));
 
 	spin_lock_irqsave(&eeprom->buffer_lock, flags);
@@ -98,9 +95,6 @@
 	struct eeprom_data *eeprom;
 	unsigned long flags;
 
-	if (off + count > attr->size)
-		return -EFBIG;
-
 	eeprom = dev_get_drvdata(container_of(kobj, struct device, kobj));
 
 	spin_lock_irqsave(&eeprom->buffer_lock, flags);