Initial support for STM32F767ZI.

examples/stm32f7/memory.x

@@ -0,0 +1,12 @@
+/* For STM32F765,767,768,769,777,778,779 devices */
+MEMORY
+{
+  /* NOTE K = KiBi = 1024 bytes */
+  FLASH : ORIGIN = 0x08000000, LENGTH = 2M
+  RAM : ORIGIN = 0x20000000, LENGTH = 368K + 16K
+}
+
+/* This is where the call stack will be allocated. */
+/* The stack is of the full descending type. */
+/* NOTE Do NOT modify `_stack_start` unless you know what you are doing */
+_stack_start = ORIGIN(RAM) + LENGTH(RAM);