bootm: qnx: Disable data cache before booting QNX image

Instead of disabling the data cache in the bootelf command, disabling
it in the do_bootm_qnxelf function.
Some ELF binary might want the cache enabled.

Signed-off-by: Emmanuel Vadot <manu@bidouilliste.com>

cmd/elf.c

@@ -109,23 +109,12 @@ static unsigned long do_bootelf_exec(ulong (*entry)(int, char * const[]),
 {
 	unsigned long ret;
 
-	/*
-	 * QNX images require the data cache is disabled.
-	 * Data cache is already flushed, so just turn it off.
-	 */
-	int dcache = dcache_status();
-	if (dcache)
-		dcache_disable();
-
 	/*
 	 * pass address parameter as argv[0] (aka command name),
 	 * and all remaining args
 	 */
 	ret = entry(argc, argv);
 
-	if (dcache)
-		dcache_enable();
-
 	return ret;
 }