qcacld-3.0: Fix watchdog when dump Roame FW after panic

When kernel panic, irq will be disabled, when dump Rome
firmware, dma buffer is malloced and freed every time
hif_diag_read_mem is called to dump 20K mem, dma_free_attrs is
called 100 times for 2M mem dump, WARN_ON(irqs_disabled())
will printk stack about 100 times in short time, watchdog bite.

Fix: Change dma mem malloc size from 20KB to 256KB, then only
malloc/free less than 10 times totally when dump Rome firmware.

Change-Id: I803b2cd30a1c6cdc1ce8f8f1073cdb6c17b650af
CRs-Fixed: 2693690

core/bmi/src/i_bmi.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2014-2020 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -72,7 +72,7 @@
 #define AXI_SIZE                0x00020000
 #endif
 
-#define PCIE_READ_LIMIT         0x00005000
+#define PCIE_READ_LIMIT         0x00040000
 
 #define SHA256_DIGEST_SIZE      32