Merge pull request #209 from toyowata/master

[LPC1549] Fixed initial value of stack pointer

Author: bogdanm

libraries/mbed/targets/cmsis/TARGET_NXP/TARGET_LPC15XX/TOOLCHAIN_ARM_MICRO/startup_LPC15xx.s

@@ -31,8 +31,9 @@
 Stack_Size      EQU     0x00000200
 
                 AREA    STACK, NOINIT, READWRITE, ALIGN=3
-Stack_Mem       SPACE   Stack_Size
-__initial_sp
+                EXPORT  __initial_sp
+
+__initial_sp        EQU     0x02009000  ; Top of RAM from LPC1549
 
 
 ; <h> Heap Configuration