Bump hekate to v6.4.1 and Nyx to v1.8.1

Versions.inc

@@ -1,11 +1,11 @@
 # IPL Version.
 BLVERSION_MAJOR := 6
 BLVERSION_MINOR := 4
-BLVERSION_HOTFX := 0
+BLVERSION_HOTFX := 1
 BLVERSION_REL   := 0
 
 # Nyx Version.
 NYXVERSION_MAJOR := 1
 NYXVERSION_MINOR := 8
-NYXVERSION_HOTFX := 0
+NYXVERSION_HOTFX := 1
 NYXVERSION_REL   := 0

bootloader/main.c

@@ -1455,7 +1455,7 @@ ment_t ment_top[] = {
 	MDEF_END()
 };
 
-menu_t menu_top = { ment_top, "hekate v6.4.0", 0, 0 };
+menu_t menu_top = { ment_top, "hekate v6.4.1", 0, 0 };
 
 extern void pivot_stack(u32 stack_top);