PPC4xx: ALPR: constify FPGA code
The ALPR custom FPGA code was missed by commit e6a857d "fpga:
constify to fix build warning" resulting in such warnings:
fpga.c:226: warning: initialization from incompatible pointer type
Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Stefan Roese <sr@denx.de>
Acked-by: Stefan Roese <sr@denx.de>
diff --git a/board/prodrive/alpr/fpga.c b/board/prodrive/alpr/fpga.c
index 93f2449..3666a9a 100644
--- a/board/prodrive/alpr/fpga.c
+++ b/board/prodrive/alpr/fpga.c
@@ -168,7 +168,7 @@
/* writes the complete buffer to the FPGA
writing the complete buffer in one function is much faster,
then calling it for every bit */
-int fpga_write_fn (void *buf, size_t len, int flush, int cookie)
+int fpga_write_fn (const void *buf, size_t len, int flush, int cookie)
{
size_t bytecount = 0;
unsigned char *data = (unsigned char *) buf;