ARM: hisi: make unexported symbols static

The two functions hix5hd2_set_scu_boot_addr() and
hip01_set_boot_addr() are not declared or exported
outside arch/arm/mach-hisi/platsmp.c file. Avoid
the following warnings by making them static:

arch/arm/mach-hisi/platsmp.c:142:6: warning: symbol 'hip01_set_boot_addr' was not declared. Should it be static?
arch/arm/mach-hisi/platsmp.c:106:6: warning: symbol 'hix5hd2_set_scu_boot_addr' was not declared. Should it be static?
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>

arch/arm/mach-hisi/platsmp.c

@@ -103,7 +103,7 @@ static void __init hisi_common_smp_prepare_cpus(unsigned int max_cpus)
 	hisi_enable_scu_a9();
 }
 
-void hix5hd2_set_scu_boot_addr(phys_addr_t start_addr, phys_addr_t jump_addr)
+static void hix5hd2_set_scu_boot_addr(phys_addr_t start_addr, phys_addr_t jump_addr)
 {
 	void __iomem *virt;
 
@@ -139,7 +139,7 @@ static const struct smp_operations hix5hd2_smp_ops __initconst = {
 #define HIP01_BOOT_ADDRESS     0x80000000
 #define REG_SC_CTRL            0x000
 
-void hip01_set_boot_addr(phys_addr_t start_addr, phys_addr_t jump_addr)
+static void hip01_set_boot_addr(phys_addr_t start_addr, phys_addr_t jump_addr)
 {
 	void __iomem *virt;