staging: r8188eu: Fix compiler warnings in os_dep/ioctl_linux.c

The 0-DAY kernel build testing backend reports the following compiler
warnings not shown on my compiler version/options:

   drivers/staging/rtl8188eu/os_dep/ioctl_linux.c: In function 'rtw_mp_efuse_get':
>> drivers/staging/rtl8188eu/os_dep/ioctl_linux.c:5836:65: warning: iteration 16u invokes undefined behavior [-Waggressive-loop-optimizations]
        sprintf(extra, "%s%02X ", extra, pEfuseHal->fakeEfuseInitMap[i+j]);
                                                                    ^
   drivers/staging/rtl8188eu/os_dep/ioctl_linux.c:5830:3: note: containing loop
      for (i = 0; i < EFUSE_MAP_SIZE; i += 16) {
      ^
>> drivers/staging/rtl8188eu/os_dep/ioctl_linux.c:6042:69: warning: iteration 16u invokes undefined behavior [-Waggressive-loop-optimizations]
        sprintf(extra, "%s %02X", extra, pEfuseHal->fakeEfuseModifiedMap[i+j]);
                                                                        ^
   drivers/staging/rtl8188eu/os_dep/ioctl_linux.c:6036:3: note: containing loop
      for (i = 0; i < EFUSE_MAP_SIZE; i += 16) {
      ^

The problem is due to improper settings for some of the EFUSE_XXX defines such that
EFUSE_MAP_SIZE was larger than the sizes of the marked arrays. Thanks to
Fengguang Wu for helping me understand the root cause.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/include/rtl8188e_hal.h

@@ -197,7 +197,6 @@ struct txpowerinfo24g {
 };
 
 #define EFUSE_REAL_CONTENT_LEN		512
-#define EFUSE_MAP_LEN			128
 #define EFUSE_MAX_SECTION		16
 #define EFUSE_IC_ID_OFFSET		506 /* For some inferior IC purpose*/
 #define AVAILABLE_EFUSE_ADDR(addr)	(addr < EFUSE_REAL_CONTENT_LEN)
@@ -215,6 +214,7 @@ struct txpowerinfo24g {
 
 #define		EFUSE_REAL_CONTENT_LEN_88E	256
 #define		EFUSE_MAP_LEN_88E		512
+#define EFUSE_MAP_LEN			EFUSE_MAP_LEN_88E
 #define		EFUSE_MAX_SECTION_88E		64
 #define		EFUSE_MAX_WORD_UNIT_88E		4
 #define		EFUSE_IC_ID_OFFSET_88E		506

drivers/staging/rtl8188eu/include/rtw_efuse.h

@@ -54,7 +54,7 @@ enum _EFUSE_DEF_TYPE {
 #define EFUSE_MAX_SIZE      256
 /* end of E-Fuse */
 
-#define		EFUSE_MAX_MAP_LEN		256
+#define		EFUSE_MAX_MAP_LEN		512
 #define		EFUSE_MAX_HW_SIZE		512
 #define		EFUSE_MAX_SECTION_BASE	16