build dasd_cmd into dasd_mod

Index: linux-2.6.15-rc5/drivers/s390/block/Kconfig
===================================================================
@@ -56,7 +56,7 @@
 	  say "N".
 
 config DASD_CMB
-	tristate "Compatibility interface for DASD channel measurement blocks"
+	bool "Compatibility interface for DASD channel measurement blocks"
 	depends on DASD
 	help
 	  This driver provides an additional interface to the channel measurement

Index: linux-2.6.15-rc5/drivers/s390/block/Makefile
===================================================================
@@ -2,16 +2,17 @@
 # S/390 block devices
 #
 
-dasd_eckd_mod-objs := dasd_eckd.o dasd_3990_erp.o dasd_9343_erp.o
-dasd_fba_mod-objs  := dasd_fba.o dasd_3370_erp.o dasd_9336_erp.o
-dasd_diag_mod-objs := dasd_diag.o
-dasd_mod-objs      := dasd.o dasd_ioctl.o dasd_proc.o dasd_devmap.o \
-			dasd_genhd.o dasd_erp.o
+dasd_eckd_mod-y	+= dasd_eckd.o dasd_3990_erp.o dasd_9343_erp.o
+dasd_fba_mod-y	+= dasd_fba.o dasd_3370_erp.o dasd_9336_erp.o
+dasd_diag_mod-y	+= dasd_diag.o
+dasd_mod-y	+= dasd.o dasd_ioctl.o dasd_proc.o dasd_devmap.o \
+		   dasd_genhd.o dasd_erp.o
+
+dasd_mod-$(CONFIG_DASD_CMB) += dasd_cmb.o
 
 obj-$(CONFIG_DASD) += dasd_mod.o
 obj-$(CONFIG_DASD_DIAG) += dasd_diag_mod.o
 obj-$(CONFIG_DASD_ECKD) += dasd_eckd_mod.o
 obj-$(CONFIG_DASD_FBA)  += dasd_fba_mod.o
-obj-$(CONFIG_DASD_CMB)  += dasd_cmb.o
 obj-$(CONFIG_BLK_DEV_XPRAM) += xpram.o
 obj-$(CONFIG_DCSSBLK) += dcssblk.o