fix: plat: marvell: fix MSS loader for A8K family

Wrong brakets caused MSS FW load timeout error:
ERROR:   MSS DMA failed (timeout)
ERROR:   MSS FW chunk 0 load failed
ERROR:   SCP Image load failed

This patch fixes the operator precedence in MSS FW load.

Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
Change-Id: I78c215606bde112f40429926c51f5fa1e4334c13
1 file changed