wince run on 32MB mDDR platform

1.config.bib modified the macro definition from 64MB to 32MB
#define ROM_IMAGE_START 80100000
; #define ROM_IMAGE_SIZE 01100000
; #define RAM_IMAGE_START 81300000
; #define RAM_IMAGE_SIZE 02D00000
#define ROM_IMAGE_SIZE 01100000
#define RAM_IMAGE_START 81300000
#define RAM_IMAGE_SIZE 00D00000
2. Modify wince37xx_32MB.bd
constants {
LOAD_ADDR = 0x40100000;
ENTRY_ADDR = 0x40100000;
sdram_arg = 0x02010020; // 0x02010040
}
3. Modify SDRAM arg from 64MB to 32MB in elf2sb convert.
elftosb -V -z -f 37xx -p "\." -c wince37xx_32MB.bd -o bootmanager.sb -D sdram_arg=0x02010020