tree: Make internal functions static

None of these functions are used outside of the files they are defined
in, so make them all static.

Change-Id: Ie9cbe12d289bcedacf2f1bf483ae64ef8039ccc1
Signed-off-by: Jacob Garber <jgarber1@ualberta.ca>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/33667
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Nico Huber <nico.h@gmx.de>
diff --git a/physmap.c b/physmap.c
index 8e80925..ad38ad3 100644
--- a/physmap.c
+++ b/physmap.c
@@ -97,7 +97,7 @@
 #define sys_physmap_rw_uncached	sys_physmap
 #define sys_physmap_ro_cached	sys_physmap
 
-void sys_physunmap_unaligned(void *virt_addr, size_t len)
+static void sys_physunmap_unaligned(void *virt_addr, size_t len)
 {
 	__dpmi_meminfo mi;
 
@@ -126,7 +126,7 @@
 #define sys_physmap_rw_uncached	sys_physmap
 #define sys_physmap_ro_cached	sys_physmap
 
-void sys_physunmap_unaligned(void *virt_addr, size_t len)
+static void sys_physunmap_unaligned(void *virt_addr, size_t len)
 {
 }
 #elif defined(__MACH__) && defined(__APPLE__)
@@ -147,7 +147,7 @@
 #define sys_physmap_rw_uncached	sys_physmap
 #define sys_physmap_ro_cached	sys_physmap
 
-void sys_physunmap_unaligned(void *virt_addr, size_t len)
+static void sys_physunmap_unaligned(void *virt_addr, size_t len)
 {
 	unmap_physical(virt_addr, len);
 }
@@ -200,7 +200,7 @@
 	return MAP_FAILED == virt_addr ? ERROR_PTR : virt_addr;
 }
 
-void sys_physunmap_unaligned(void *virt_addr, size_t len)
+static void sys_physunmap_unaligned(void *virt_addr, size_t len)
 {
 	munmap(virt_addr, len);
 }