Makefile: fix a couple of wrong variable assignments
Fix a couple of wrong assignments to D_SRCS and C_SRCS.
@@ -85,8 +85,8 @@ D_SRCS += debug/serial.c
D_SRCS += debug/uart16550.c
D_SRCS += debug/console.c
D_SRCS += debug/sbuf.c
-C_SRCS += debug/printf.c
-D_SRCS += boot/acpi.c
+D_SRCS += debug/printf.c
+C_SRCS += boot/acpi.c
C_SRCS += boot/dmar_parse.c
C_SRCS += arch/x86/ioapic.c
C_SRCS += arch/x86/intr_lapic.c
