[LPC4088]: Corrected RAM size in linker script (ARM_GCC)

Author: arebert

libraries/mbed/targets/cmsis/TARGET_NXP/TARGET_LPC408X/TOOLCHAIN_GCC_ARM/LPC4088.ld

@@ -4,7 +4,7 @@
 MEMORY
 {
   FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 512K
-  RAM (rwx) : ORIGIN = 0x100000E8, LENGTH = (32K - 0xE8)
+  RAM (rwx) : ORIGIN = 0x100000E8, LENGTH = (64K - 0xE8)
 
   USB_RAM(rwx) : ORIGIN = 0x20000000, LENGTH = 16K
   ETH_RAM(rwx) : ORIGIN = 0x20004000, LENGTH = 16K