Release: Don't require DEPLOY_DESTINATION being an argument to make

DEPLOY_DESTINATION variables was set to empty value in release.mk, thus
value set in environment was ignored - to set it user would have to either
set via make command arguments or via release.config. This was inconsistent
with DEPLOY_BUILD_DESTINATION, which could have been used implicitly from
environment. This patch unifies behaviour for both variables.

Signed-off-by: Anton Kolesov <[email protected]>

Author: anthony-kolesov

release.mk

@@ -30,8 +30,6 @@
 
 CONFIG_STATIC_TOOLCHAIN := n
 
-DEPLOY_DESTINATION =
-
 # Whether to build big endian toolchain
 ENABLE_BIG_ENDIAN := y