kboot: Move syscall stubs to libkboot

Sponsored by:		Netflix

stand/kboot/kboot/arch/aarch64/Makefile.inc

@@ -1,4 +1,4 @@
-SRCS+=		host_syscall.S tramp.S exec.c load_addr.c fdt_arch.c
+SRCS+=		tramp.S exec.c load_addr.c fdt_arch.c
 
 .PATH:	${BOOTSRC}/arm64/libarm64
 CFLAGS+=-I${BOOTSRC}/arm64/libarm64

stand/kboot/kboot/arch/amd64/Makefile.inc

@@ -1,4 +1,4 @@
-SRCS+=		host_syscall.S amd64_tramp.S elf64_freebsd.c load_addr.c fdt_arch.c
+SRCS+=		amd64_tramp.S elf64_freebsd.c load_addr.c fdt_arch.c
 
 CFLAGS+=	-I${SYSDIR}/contrib/dev/acpica/include
 

stand/kboot/libkboot/Makefile

@@ -3,9 +3,11 @@
 LIB=	kboot
 WARNS?= 4
 
+.PATH:	${.CURDIR}/arch/${MACHINE_ARCH}
 CFLAGS+=-I${.CURDIR} -I${.CURDIR}/arch/${MACHINE_ARCH}
 
-SRCS=	crt1.c
+SRCS=	crt1.c \
+	host_syscall.S
 
 .sinclude "${.CURDIR}/arch/${MACHINE_ARCH}/Makefile.inc"