bis: Pull latest lockpick driver and refactor it

- Refactor various variables and functions
- Flush whole cache when full
- Allow cache to be disabled
- Add support for raw emuMMC in nyx contenxt
- Use partition names for keys (to avoid issues with different ordering)
- Add deinit function that flushes the whole cache
- Change bis lookup address
- Halve cache size to 256MB in order to support 512MB ramdisk also.

Co-Authored-By: shchmue <7903403+shchmue@users.noreply.github.com>

bdk/memory_map.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019 CTCaer
+ * Copyright (c) 2019-2021 CTCaer
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -50,6 +50,13 @@
 // Virtual disk / Chainloader buffers.
 #define RAM_DISK_ADDR 0xA4000000
 #define  RAM_DISK_SZ  0x41000000 // 1040MB.
+#define  RAM_DISK2_SZ 0x21000000 //  528MB.
+
+// NX BIS driver sector cache.
+#define NX_BIS_CACHE_ADDR  0xC5000000
+#define  NX_BIS_CACHE_SZ   0x10020000 // 256MB.
+#define NX_BIS_LOOKUP_ADDR 0xD6000000
+#define  NX_BIS_LOOKUP_SZ   0xF000000 // 240MB.
 
 // L4T Kernel Panic Storage (PSTORE).
 #define PSTORE_ADDR   0xB0000000
@@ -93,10 +100,6 @@
 /* ---   Hole: 129MB 0xF6A00000 - 0xFEB3FFFF --- */
 #define DRAM_START2       0xFEB40000
 
-// NX BIS driver sector cache.
-#define NX_BIS_CACHE_ADDR 0xFEE00000
-#define  NX_BIS_CACHE_SZ    0x100000
-
 // USB buffers.
 #define USBD_ADDR                 0xFEF00000
 #define USB_DESCRIPTOR_ADDR       0xFEF40000