fpga: virtex2: Fix printf format string warnings

Warning appears if built with FPGA_DEBUG defined:

  CC      drivers/fpga/virtex2.o
/mnt/data/adahl/src/u-boot/drivers/fpga/virtex2.c: In function ‘virtex2_ssm_load’:
/mnt/data/adahl/src/u-boot/drivers/fpga/virtex2.c:333:11: warning: format ‘%d’ expects argument of type ‘int’, but argument 4 has type ‘size_t’ {aka ‘long unsigned int’} [-Wformat=]
    PRINTF("%s:%d:done went active early, bytecount = %d\n",
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
           __func__, __LINE__, bytecount);
                               ~~~~~~~~~
/mnt/data/adahl/src/u-boot/drivers/fpga/virtex2.c:25:37: note: in definition of macro ‘PRINTF’
 #define PRINTF(fmt, args...) printf(fmt, ##args)
                                     ^~~
/mnt/data/adahl/src/u-boot/drivers/fpga/virtex2.c: In function ‘virtex2_ss_load’:
/mnt/data/adahl/src/u-boot/drivers/fpga/virtex2.c:468:12: warning: format ‘%d’ expects argument of type ‘int’, but argument 4 has type ‘size_t’ {aka ‘long unsigned int’} [-Wformat=]
     PRINTF("%s:%d:done went active early, bytecount = %d\n",
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            __func__, __LINE__, bytecount);
                                ~~~~~~~~~
/mnt/data/adahl/src/u-boot/drivers/fpga/virtex2.c:25:37: note: in definition of macro ‘PRINTF’
 #define PRINTF(fmt, args...) printf(fmt, ##args)
                                     ^~~

Signed-off-by: Alexander Dahl <ada@thorsis.com>
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/20221007122003.11239-5-ada@thorsis.com
diff --git a/drivers/fpga/virtex2.c b/drivers/fpga/virtex2.c
index 51b8d31..e769cee 100644
--- a/drivers/fpga/virtex2.c
+++ b/drivers/fpga/virtex2.c
@@ -330,7 +330,7 @@
 #endif
 
 		if ((*fn->done)(cookie) == FPGA_SUCCESS) {
-			PRINTF("%s:%d:done went active early, bytecount = %d\n",
+			PRINTF("%s:%d:done went active early, bytecount = %zu\n",
 			       __func__, __LINE__, bytecount);
 			break;
 		}
@@ -465,7 +465,7 @@
 #endif
 
 			if ((*fn->done)(cookie) == FPGA_SUCCESS) {
-				PRINTF("%s:%d:done went active early, bytecount = %d\n",
+				PRINTF("%s:%d:done went active early, bytecount = %zu\n",
 				       __func__, __LINE__, bytecount);
 				break;
 			}