Revert "dbus-sdr: disable [sensor/storage]handler builds when using dbus-sdr"

This reverts commit 83c8d1a455ab1bd88bfb8fd7ab79d0b9b329bd18.

Reason for revert: 

```
$ journalctl -u phosphor-ipmi-host -overbose  | grep ERROR
    MESSAGE=ERROR opening IPMI provider
    ERROR=/usr/lib/ipmid-providers/libipmi20.so.0.0.0: undefined symbol: _Z27find_type_for_sensor_number
```

ipmisensor.cpp need find_type_for_sensor_number() from
sensorhandler.cpp

Reverting for openbmc/phosphor-host-ipmid#175


Change-Id: I32df8f2b4c89141f192db66fc59858c8e59e90d8
Signed-off-by: Willy Tu <wltu@google.com>
diff --git a/Makefile.am b/Makefile.am
index 98487ad..3e25794 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -97,7 +97,9 @@
 	app/watchdog_service.cpp \
 	apphandler.cpp \
 	sys_info_param.cpp \
+	sensorhandler.cpp \
 	entity_map_json.cpp \
+	storagehandler.cpp \
 	chassishandler.cpp \
 	dcmihandler.cpp \
 	ipmisensor.cpp \
@@ -113,13 +115,6 @@
 	$(libipmi20_la_TRANSPORTOEM) \
 	$(libipmi20_BUILT_LIST)
 
-if FEATURE_DYNAMIC_SENSORS
-else
-libipmi20_la_SOURCES += \
-	sensorhandler.cpp \
-	storagehandler.cpp
-endif
-
 check_PROGRAMS =
 XFAIL_TESTS =