powerpc/time: Remove generic_suspend_{dis/en}able_irqs()

Commit d75d68cf ("powerpc: Clean up obsolete code relating to
decrementer and timebase") made generic_suspend_enable_irqs() and
generic_suspend_disable_irqs() static.

Fold them into their only caller.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/c3f9ec9950394ef939014f7934268e6ee30ca04f.1630398566.git.christophe.leroy@csgroup.eu

arch/powerpc/kernel/time.c

@@ -631,8 +631,12 @@ void timer_broadcast_interrupt(void)
 #endif
 
 #ifdef CONFIG_SUSPEND
-static void generic_suspend_disable_irqs(void)
+/* Overrides the weak version in kernel/power/main.c */
+void arch_suspend_disable_irqs(void)
 {
+	if (ppc_md.suspend_disable_irqs)
+		ppc_md.suspend_disable_irqs();
+
 	/* Disable the decrementer, so that it doesn't interfere
 	 * with suspending.
 	 */
@@ -642,23 +646,11 @@ static void generic_suspend_disable_irqs(void)
 	set_dec(decrementer_max);
 }
 
-static void generic_suspend_enable_irqs(void)
-{
-	local_irq_enable();
-}
-
-/* Overrides the weak version in kernel/power/main.c */
-void arch_suspend_disable_irqs(void)
-{
-	if (ppc_md.suspend_disable_irqs)
-		ppc_md.suspend_disable_irqs();
-	generic_suspend_disable_irqs();
-}
-
 /* Overrides the weak version in kernel/power/main.c */
 void arch_suspend_enable_irqs(void)
 {
-	generic_suspend_enable_irqs();
+	local_irq_enable();
+
 	if (ppc_md.suspend_enable_irqs)
 		ppc_md.suspend_enable_irqs();
 }