flash存储中各量级对应的十六进制数，内核移植中，flash配置时很有用哦，比如配置struct mtd_partition，struct resource这两个结构体
#define SIZE_1K 0x00000400
#define SIZE_2K 0x00000800
#define SIZE_4K 0x00001000
#define SIZE_8K 0x00002000
#define SIZE_16K 0x00004000
#define SIZE_32K 0x00008000
#define SIZE_64K 0x00010000
#define SIZE_128K 0x00020000
#define SIZE_256K 0x00040000
#define SIZE_512K 0x00080000
#define SIZE_1M 0x00100000
#define SIZE_2M 0x00200000
#define SIZE_4M 0x00400000
#define SIZE_8M 0x00800000
#define SIZE_16M 0x01000000
#define SIZE_32M 0x02000000
#define SIZE_64M 0x04000000
#define SIZE_128M 0x08000000
#define SIZE_256M 0x10000000
#define SIZE_512M 0x20000000
#define SIZE_1G 0x40000000
#define SIZE_2G 0x80000000
/*
#define SIZE_128K (128*1024)
#define SIZE_256K (256*1024)
#define SIZE_512K (512*1024)
#define SIZE_1M (1024*1024)
*/