fix(tree): correct some typos

found using codespell (https://github.com/codespell-project/codespell).

Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Change-Id: I1bfa797e3460adddeefa916bb68e22beddaf6373
diff --git a/plat/xilinx/zynqmp/pm_service/zynqmp_pm_api_sys.c b/plat/xilinx/zynqmp/pm_service/zynqmp_pm_api_sys.c
index fb7b009..85e1464 100644
--- a/plat/xilinx/zynqmp/pm_service/zynqmp_pm_api_sys.c
+++ b/plat/xilinx/zynqmp/pm_service/zynqmp_pm_api_sys.c
@@ -635,7 +635,7 @@
  * pm_secure_rsaaes() - Load the secure images.
  *
  * This function provides access to the xilsecure library to load
- * the authenticated, encrypted, and authenicated/encrypted images.
+ * the authenticated, encrypted, and authenticated/encrypted images.
  *
  * address_low: lower 32-bit Linear memory space address
  *