boards/imxrt1060-evk: Generate nuttx.map in the root directory

to avoid the follow warning:
  Normalize imxrt1060-evk/nshocram
HEAD detached at pull/831/merge
Untracked files:
  (use "git add <file>..." to include in what will be committed)

	arch/arm/src/nuttx.map

nothing added to commit but untracked files present (use "git add" to track)

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>

boards/arm/imxrt/imxrt1060-evk/scripts/Make.defs

@@ -115,7 +115,12 @@ LIBEXT = .a
 EXEEXT =
 
 ifneq ($(CROSSDEV),arm-nuttx-elf-)
-  LDFLAGS += -nostartfiles -nodefaultlibs -Map nuttx.map
+  LDFLAGS += -nostartfiles -nodefaultlibs
+ifeq ($(WINTOOL),y)
+  LDFLAGS += -Map="${shell cygpath -w $(TOPDIR)/nuttx.map}"
+else
+  LDFLAGS += -Map=$(TOPDIR)/nuttx.map
+endif
 endif
 ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   LDFLAGS += -g