compulab: imx8mm-cl-iot-gate: Fix some function declarations in ddr.h

We have a few places here that the function declarations do not
match their prototypes, correct them.

Signed-off-by: Ying-Chun Liu (PaulLiu) <paulliu@debian.org>
Cc: Tom Rini <trini@konsulko.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: NXP i.MX U-Boot Team <uboot-imx@nxp.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reported-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
diff --git a/board/compulab/imx8mm-cl-iot-gate/ddr/ddr.h b/board/compulab/imx8mm-cl-iot-gate/ddr/ddr.h
index f7d4fdc..508b4a5 100644
--- a/board/compulab/imx8mm-cl-iot-gate/ddr/ddr.h
+++ b/board/compulab/imx8mm-cl-iot-gate/ddr/ddr.h
@@ -25,7 +25,7 @@
 
 u32 cl_eeprom_get_ddrinfo(void);
 u32 cl_eeprom_set_ddrinfo(u32 ddrinfo);
-u32 cl_eeprom_get_subind(void);
-u32 cl_eeprom_set_subind(u32 subind);
+u8 cl_eeprom_get_subind(void);
+u8 cl_eeprom_set_subind(u8 subind);
 u32 cl_eeprom_get_osize(void);
 #endif