modinst: wrap long lines in order to enhance cmd_modules_install

Note: shouldn't we use 'install -D $(2)/$@ $@' instead of mkdir
and cp ?
Reviewed-by: NWilly Tarreau <w@1wt.eu>
Signed-off-by: NBertrand Jacquin <beber@meleeweb.net>
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>

scripts/Makefile.modinst

@@ -18,7 +18,11 @@ __modinst: $(modules)
 
 # Don't stop modules_install if we can't sign external modules.
 quiet_cmd_modules_install = INSTALL $@
-      cmd_modules_install = mkdir -p $(2); cp $@ $(2) ; $(mod_strip_cmd) $(2)/$(notdir $@) ; $(mod_sign_cmd) $(2)/$(notdir $@) $(patsubst %,|| true,$(KBUILD_EXTMOD))
+      cmd_modules_install = \
+    mkdir -p $(2) ; \
+    cp $@ $(2) ; \
+    $(mod_strip_cmd) $(2)/$(notdir $@) ; \
+    $(mod_sign_cmd) $(2)/$(notdir $@) $(patsubst %,|| true,$(KBUILD_EXTMOD))
 
 # Modules built outside the kernel source tree go into extra by default
 INSTALL_MOD_DIR ?= extra