tpm-tools: use the new gettext logic

This commit switches to use the new gettext logic, which involves:

 - using TARGET_NLS_DEPENDENCIES instead of hand-encoded dependencies
   on gettext/host-gettext

 - dropping BR2_PACKAGE_GETTEXT selection

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/tpm-tools/Config.in

@@ -5,7 +5,6 @@ config BR2_PACKAGE_TPM_TOOLS
 	depends on !BR2_arc # trousers
 	select BR2_PACKAGE_TROUSERS
 	select BR2_PACKAGE_OPENSSL
-	select BR2_PACKAGE_GETTEXT if BR2_NEEDS_GETTEXT_IF_LOCALE
 	help
 	  Tools to manage and diagnose a TPM
 

package/tpm-tools/tpm-tools.mk

@@ -9,8 +9,7 @@ TPM_TOOLS_SITE = http://downloads.sourceforge.net/project/trousers/tpm-tools/$(T
 TPM_TOOLS_STRIP_COMPONENTS = 2
 TPM_TOOLS_LICENSE = Common Public License Version 1.0
 TPM_TOOLS_LICENSE_FILES = LICENSE
-TPM_TOOLS_DEPENDENCIES = trousers openssl \
-	$(if $(BR2_NEEDS_GETTEXT_IF_LOCALE),gettext)
+TPM_TOOLS_DEPENDENCIES = trousers openssl $(TARGET_NLS_DEPENDENCIES)
 # configure.in and lib/Makefile.am is patched
 TPM_TOOLS_AUTORECONF = YES
 TPM_TOOLS_GETTEXTIZE = YES