global: Make <asm/global_data.h> include <asm/u-boot.h>

This follows the example of RISC-V where <asm/global_data.h> includes
<asm/u-boot.h> directly as "gd" includes a reference to bd_info already
and so the first must include the second anyhow. We then remove
<asm/u-boot.h> from all of the places which include references to "gd"
an so have <asm/global_data.h> already.

Signed-off-by: Tom Rini <trini@konsulko.com>

arch/mips/include/asm/global_data.h

@@ -9,6 +9,7 @@
 
 #include <linux/types.h>
 #include <asm/regdef.h>
+#include <asm/u-boot.h>
 
 struct octeon_eeprom_mac_addr {
 	u8 mac_addr_base[6];