Move uninitialised .data16 variables to .bss16; saves around 2000

bytes of useless zeroes in the final image.

src/arch/i386/core/basemem_packet.c

 #include <basemem_packet.h>
 
 #undef basemem_packet
-char __data16_array ( basemem_packet, [BASEMEM_PACKET_LEN] );
+char __bss16_array ( basemem_packet, [BASEMEM_PACKET_LEN] );

src/arch/i386/drivers/net/undiload.c

  */
 
 /** Parameter block for calling UNDI loader */
-static struct s_UNDI_LOADER __data16 ( undi_loader );
+static struct s_UNDI_LOADER __bss16 ( undi_loader );
 #define undi_loader __use_data16 ( undi_loader )
 
 /** UNDI loader entry point */
-static SEGOFF16_t __data16 ( undi_loader_entry );
+static SEGOFF16_t __bss16 ( undi_loader_entry );
 #define undi_loader_entry __use_data16 ( undi_loader_entry )
 
 /**

src/arch/i386/drivers/net/undinet.c

  * Used as the paramter block for all UNDI API calls.  Resides in base
  * memory.
  */
-static union u_PXENV_ANY __data16 ( undinet_params );
+static union u_PXENV_ANY __bss16 ( undinet_params );
 #define undinet_params __use_data16 ( undinet_params )
 
 /** UNDI entry point
  * Used as the indirection vector for all UNDI API calls.  Resides in
  * base memory.
  */
-SEGOFF16_t __data16 ( undinet_entry_point );
+SEGOFF16_t __bss16 ( undinet_entry_point );
 #define undinet_entry_point __use_data16 ( undinet_entry_point )
 
 /**

src/arch/i386/firmware/pcbios/memmap.c

 #define E820_TYPE_NVS		4 /**< ACPI NVS memory */
 
 /** Buffer for INT 15,e820 calls */
-static struct e820_entry __data16 ( e820buf );
+static struct e820_entry __bss16 ( e820buf );
 #define e820buf __use_data16 ( e820buf )
 
 /**

src/arch/i386/image/multiboot.c

  * along with the other structures belonging to the Multiboot
  * information table.
  */
-static struct multiboot_info __data16 ( mbinfo );
+static struct multiboot_info __bss16 ( mbinfo );
 #define mbinfo __use_data16 ( mbinfo )
 
 /** The multiboot bootloader name */
 
 /** The multiboot memory map */
 static struct multiboot_memory_map
-	__data16_array ( mbmemmap, [MAX_MEMORY_REGIONS] );
+	__bss16_array ( mbmemmap, [MAX_MEMORY_REGIONS] );
 #define mbmemmap __use_data16 ( mbmemmap )
 
 /** The multiboot module list */
-static struct multiboot_module __data16_array ( mbmodules, [MAX_MODULES] );
+static struct multiboot_module __bss16_array ( mbmodules, [MAX_MODULES] );
 #define mbmodules __use_data16 ( mbmodules )
 
 /**

src/arch/i386/include/basemem_packet.h

 #define BASEMEM_PACKET_LEN 1514
 
 /** Base memory packet buffer */
-extern char __data16_array ( basemem_packet, [BASEMEM_PACKET_LEN] );
+extern char __bss16_array ( basemem_packet, [BASEMEM_PACKET_LEN] );
 #define basemem_packet __use_data16 ( basemem_packet )
 
 #endif /* BASEMEM_PACKET_H */