Use named field's initializer when constructing <foo>_platform structure.

In current code, the delay argument in FDT_PLATFORM_DEF(2) improperly
initialize refs field from kobj_class structure instead of delay_count
field.
This causes not working DELAY() function (due to never initialized
delay_count) in earlier boot stages, until the first timer was attached.

MFC after:	2 weeks

sys/arm/include/platformvar.h

@@ -90,22 +90,22 @@ typedef struct fdt_platform_class fdt_platform_def_t;
 
 extern platform_method_t fdt_platform_methods[];
 
-#define FDT_PLATFORM_DEF2(NAME, VAR_NAME, NAME_STR, size, compatible,	\
-    delay)								\
-CTASSERT(delay > 0);							\
+#define FDT_PLATFORM_DEF2(NAME, VAR_NAME, NAME_STR, _size, _compatible,	\
+    _delay)								\
+CTASSERT(_delay > 0);							\
 static fdt_platform_def_t VAR_NAME ## _fdt_platform = {			\
 	.name = NAME_STR,						\
 	.methods = fdt_platform_methods,				\
-	.fdt_compatible = compatible,					\
+	.fdt_compatible = _compatible,					\
 };									\
 static kobj_class_t VAR_NAME ## _baseclasses[] =			\
 	{ (kobj_class_t)&VAR_NAME ## _fdt_platform, NULL };		\
 static platform_def_t VAR_NAME ## _platform = {				\
-	NAME_STR,							\
-	NAME ## _methods,						\
-	size,								\
-	VAR_NAME ## _baseclasses,					\
-	delay,								\
+	.name = NAME_STR,						\
+	.methods = NAME ## _methods,					\
+	.size = _size,							\
+	.baseclasses = VAR_NAME ## _baseclasses,			\
+	.delay_count = _delay,						\
 };									\
 DATA_SET(platform_set, VAR_NAME ## _platform)