x86/of: Change x86_dtb_parse_smp_config() to static

x86_dtb_parse_smp_config() is called locally only, change it to static.
Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/1712068830-4513-5-git-send-email-ssengar@linux.microsoft.com

arch/x86/include/asm/prom.h

@@ -23,12 +23,10 @@ extern int of_ioapic;
 extern u64 initial_dtb;
 extern void add_dtb(u64 data);
 void x86_of_pci_init(void);
-void x86_dtb_parse_smp_config(void);
 void x86_flattree_get_config(void);
 #else
 static inline void add_dtb(u64 data) { }
 static inline void x86_of_pci_init(void) { }
-static inline void x86_dtb_parse_smp_config(void) { }
 static inline void x86_flattree_get_config(void) { }
 #define of_ioapic 0
 #endif

arch/x86/kernel/devicetree.c

@@ -279,6 +279,15 @@ static void __init dtb_apic_setup(void)
 	dtb_ioapic_setup();
 }
 
+static void __init x86_dtb_parse_smp_config(void)
+{
+	if (!of_have_populated_dt())
+		return;
+
+	dtb_setup_hpet();
+	dtb_apic_setup();
+}
+
 void __init x86_flattree_get_config(void)
 {
 #ifdef CONFIG_OF_EARLY_FLATTREE
@@ -307,12 +316,3 @@ void __init x86_flattree_get_config(void)
 	if (of_have_populated_dt())
 		x86_init.mpparse.parse_smp_cfg = x86_dtb_parse_smp_config;
 }
-
-void __init x86_dtb_parse_smp_config(void)
-{
-	if (!of_have_populated_dt())
-		return;
-
-	dtb_setup_hpet();
-	dtb_apic_setup();
-}