Add foo_genassym.c files to DPSRCS so dependencies for them are generated.

This ensures these objects are rebuilt to generate an updated header of
assembly constants if needed.

sys/modules/linux/Makefile

@@ -17,6 +17,7 @@ SRCS=	linux_fork.c linux${SFX}_dummy.c linux_emul.c linux_file.c \
 	opt_inet6.h opt_compat.h opt_posix.h opt_usb.h vnode_if.h \
 	device_if.h bus_if.h assym.s \
 	linux${SFX}_locore.s linux${SFX}_support.s
+DPSRCS=	linux${SFX}_genassym.c
 
 # XXX: for assym.s
 SRCS+=  opt_kstack_pages.h opt_nfs.h opt_compat.h opt_hwpmc_hooks.h

sys/modules/vmm/Makefile

@@ -4,6 +4,7 @@ KMOD=	vmm
 
 SRCS=	opt_acpi.h opt_ddb.h device_if.h bus_if.h pci_if.h
 SRCS+=	vmx_assym.h svm_assym.h
+DPSRCS=	vmx_genassym.c svm_genassym.c
 
 CFLAGS+= -DVMM_KEEP_STATS -DSMP
 CFLAGS+= -I${.CURDIR}/../../amd64/vmm
@@ -53,7 +54,7 @@ SRCS+=	vmcb.c		\
 	npt.c		\
 	amdv.c		\
 	svm_msr.c
-	
+
 CLEANFILES=	vmx_assym.h vmx_genassym.o svm_assym.h svm_genassym.o
 
 vmx_assym.h:    vmx_genassym.o