feat: cleanup init code, small other refactors

kernel/acpi/acpi.c

@@ -13,6 +13,7 @@
 #include <myke/acpi/structures.h>
 #include <myke/cpu/lapic.h>
 #include <myke/libk/libk.h>
+#include <myke/util/init.h>
 
 void acpi_handle_facp(const struct acpi_sdt_header *addr);
 
@@ -272,5 +273,12 @@ void acpi_parse() {
 }
 
 void acpi_init() {
+    acpi_parse();
     lai_create_namespace();
-}
+}
+
+INIT_FUNCTION(100) = {
+    .name = "acpi",
+    .stage = INIT_STAGE_EARLY_BOOT_1,
+    .init = acpi_init,
+};