ARMv7M: Add STM32F4 support

Signed-off-by: Kamil Lulko <rev13@wp.pl>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/include/flash.h b/include/flash.h
index 30aa080..48aa3a5 100644
--- a/include/flash.h
+++ b/include/flash.h
@@ -459,6 +459,8 @@
 #define FLASH_S29GL064M 0x00F0		/* Spansion S29GL064M-R6		*/
 #define FLASH_S29GL128N 0x00F1		/* Spansion S29GL128N			*/
 
+#define FLASH_STM32F4	0x00F2		/* STM32F4 Embedded Flash */
+
 #define FLASH_UNKNOWN	0xFFFF		/* unknown flash type			*/