all packages: rename XXXTARGETS to xxx-package

Also remove the redundant $(call ...).

This is a purely mechanical change, performed with
find package linux toolchain boot -name \*.mk | \
  xargs sed -i -e 's/$(eval $(call GENTARGETS))/$(eval $(generic-package))/' \
               -e 's/$(eval $(call AUTOTARGETS))/$(eval $(autotools-package))/' \
               -e 's/$(eval $(call CMAKETARGETS))/$(eval $(cmake-package))/'

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
diff --git a/package/mpc/mpc.mk b/package/mpc/mpc.mk
index d424766..47bdbbb 100644
--- a/package/mpc/mpc.mk
+++ b/package/mpc/mpc.mk
@@ -13,5 +13,5 @@
 MPC_AUTORECONF = YES
 HOST_MPC_AUTORECONF = YES
 
-$(eval $(call AUTOTARGETS))
+$(eval $(autotools-package))
 $(eval $(host-autotools-package))