staging: tidspbridge: Fix atoi to support hexadecimal numbers correctly

For some strange reason, the DSP base image node/object properties
description string stores hexadecimal numbers with a 'h' or 'H' suffix
instead of a '0x' prefix. This causes parsing issue because the
dspbridge atoi() implementation relies on strict_strtoul(), which will
return an error because of the trailing 'h' character.

As the atoi() return value is never checked for an error anyway, replace
strict_strtoul() with simple_strtoul() to ignore the suffix.

This fix gets rid of the following assertion failed messages that were
printed when running the dsp-dummy test application.

drivers/staging/tidspbridge/rmgr/nldr.c, line 1691:
Assertion (segid == MEMINTERNALID || segid == MEMEXTERNALID) failed.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Omar Ramirez Luna <omar.ramirez@ti.com>

drivers/staging/tidspbridge/rmgr/dbdcd.c

@@ -1020,8 +1020,6 @@ static s32 atoi(char *psz_buf)
 {
 	char *pch = psz_buf;
 	s32 base = 0;
-	unsigned long res;
-	int ret_val;
 
 	while (isspace(*pch))
 		pch++;
@@ -1033,9 +1031,7 @@ static s32 atoi(char *psz_buf)
 		base = 16;
 	}
 
-	ret_val = strict_strtoul(pch, base, &res);
-
-	return ret_val ? : res;
+	return simple_strtoul(pch, NULL, base);
 }
 
 /*