Revert "Merge patch series "pxe: Allow extlinux booting without CMDLINE enabled""

As reported by Jonas Karlman this series breaks booting on some AArch64
platforms with common use cases. For now the best path forward is to
revert the series.

This reverts commit 777c284609, reversing
changes made to ab3453e7b1.

Link: https://lore.kernel.org/u-boot/50dfa3d6-a1ca-4492-a3fc-8d8c56b40b43@kwiboo.se/
Signed-off-by: Tom Rini <trini@konsulko.com>

include/bootm.h

@@ -317,7 +317,7 @@ void zimage_dump(struct boot_params *base_ptr, bool show_cmdline);
  * bootm_boot_start() - Boot an image at the given address
  *
  * @addr: Image address
- * @cmdline: Command line to set, NULL for default
+ * @cmdline: Command line to set
  */
 int bootm_boot_start(ulong addr, const char *cmdline);
 

include/fastboot-internal.h

@@ -6,7 +6,7 @@
 /**
  * fastboot_buf_addr - base address of the fastboot download buffer
  */
-extern ulong fastboot_buf_addr;
+extern void *fastboot_buf_addr;
 
 /**
  * fastboot_buf_size - size of the fastboot download buffer

include/fastboot.h

@@ -114,13 +114,13 @@ int fastboot_set_reboot_flag(enum fastboot_reboot_reason reason);
  */
 void fastboot_set_progress_callback(void (*progress)(const char *msg));
 
-/**
+/*
  * fastboot_init() - initialise new fastboot protocol session
  *
- * @buf_addr: Address of download buffer, or 0 for default
+ * @buf_addr: Pointer to download buffer, or NULL for default
  * @buf_size: Size of download buffer, or zero for default
  */
-void fastboot_init(ulong buf_addr, u32 buf_size);
+void fastboot_init(void *buf_addr, u32 buf_size);
 
 /**
  * fastboot_boot() - Execute fastboot boot command