platsupport,keyboard_vkey: Ignore compiler warning

This file intentionally overrides array initializer values.

Signed-off-by: Kent McLeod <kent@kry10.com>

libplatsupport/CMakeLists.txt

diff --git a/libplatsupport/CMakeLists.txt b/libplatsupport/CMakeLists.txt
index 0316c13..9ca567e 100644
--- a/libplatsupport/CMakeLists.txt
+++ b/libplatsupport/CMakeLists.txt
@@ -113,6 +113,15 @@
     list(APPEND deps src/plat/imx8m/clock.c)
 endif()
 
+if(KernelPlatPC99)
+    set_source_files_properties(
+        src/plat/pc99/keyboard_vkey.c
+        PROPERTIES
+        COMPILE_FLAGS
+        -Wno-initializer-overrides
+    )
+endif()
+
 list(SORT deps)
 
 add_config_library(platsupport "${configure_string}")