layers: Fix multi-plane aspect bit check

Remove multi-plane formats from classification as 'color' formats
and add specific aspect bit checks for them.

Change-Id: Ie899a6f2a91ceb43e6fb92c3fdd9056e00849fc3
diff --git a/layers/vk_format_utils.h b/layers/vk_format_utils.h
index 8ffa231..c530405 100644
--- a/layers/vk_format_utils.h
+++ b/layers/vk_format_utils.h
@@ -119,10 +119,12 @@
 VK_LAYER_EXPORT VkDeviceSize SafeModulo(VkDeviceSize dividend, VkDeviceSize divisor);
 
 static inline bool FormatIsUndef(VkFormat format) { return (format == VK_FORMAT_UNDEFINED); }
-static inline bool FormatIsColor(VkFormat format) { return !(FormatIsUndef(format) || FormatIsDepthOrStencil(format)); }
 static inline bool FormatHasDepth(VkFormat format) { return (FormatIsDepthOnly(format) || FormatIsDepthAndStencil(format)); }
 static inline bool FormatHasStencil(VkFormat format) { return (FormatIsStencilOnly(format) || FormatIsDepthAndStencil(format)); }
 static inline bool FormatIsMultiplane(VkFormat format) { return ((FormatPlaneCount(format)) > 1u); }
+static inline bool FormatIsColor(VkFormat format) {
+    return !(FormatIsUndef(format) || FormatIsDepthOrStencil(format) || FormatIsMultiplane(format));
+}
 
 #ifdef __cplusplus
 }