counter/ti-eqep: Fix regmap max_register

The values given were the offset of the register after the last
register instead of the actual last register in each range. Fix
by using the correct last register of each range.

Fixes: f213729f ("counter: new TI eQEP driver")
Signed-off-by: David Lechner <david@lechnology.com>
Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Link: https://lore.kernel.org/r/20201025165122.607866-1-david@lechnology.comSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/counter/ti-eqep.c

@@ -368,7 +368,7 @@ static const struct regmap_config ti_eqep_regmap32_config = {
 	.reg_bits = 32,
 	.val_bits = 32,
 	.reg_stride = 4,
-	.max_register = 0x24,
+	.max_register = QUPRD,
 };
 
 static const struct regmap_config ti_eqep_regmap16_config = {
@@ -376,7 +376,7 @@ static const struct regmap_config ti_eqep_regmap16_config = {
 	.reg_bits = 16,
 	.val_bits = 16,
 	.reg_stride = 2,
-	.max_register = 0x1e,
+	.max_register = QCPRDLAT,
 };
 
 static int ti_eqep_probe(struct platform_device *pdev)