package/nodejs: fix host dependencies

Fix the following build failure raised since commit
78d7c5f803c2f59385b57525e2d1d09da15e22a6:

WARNING: unmet direct dependencies detected for BR2_PACKAGE_HOST_QEMU
  Depends on [n]: (BR2_PACKAGE_HOST_QEMU_SYSTEM_ARCH_SUPPORTS [=n] || BR2_PACKAGE_HOST_QEMU_USER_ARCH_SUPPORTS [=n]) && BR2_HOST_GCC_AT_LEAST_8 [=y]
  Selected by [y]:
  - BR2_PACKAGE_HOST_NODEJS [=y] && BR2_HOST_GCC_AT_LEAST_7 [=y]

WARNING: unmet direct dependencies detected for BR2_PACKAGE_HOST_QEMU_LINUX_USER_MODE
  Depends on [n]: BR2_PACKAGE_HOST_QEMU [=y] && BR2_PACKAGE_HOST_QEMU_USER_ARCH_SUPPORTS [=n]
  Selected by [y]:
  - BR2_PACKAGE_HOST_NODEJS [=y] && BR2_HOST_GCC_AT_LEAST_7 [=y]

WARNING: unmet direct dependencies detected for BR2_PACKAGE_HOST_QEMU
  Depends on [n]: (BR2_PACKAGE_HOST_QEMU_SYSTEM_ARCH_SUPPORTS [=n] || BR2_PACKAGE_HOST_QEMU_USER_ARCH_SUPPORTS [=n]) && BR2_HOST_GCC_AT_LEAST_8 [=y]
  Selected by [y]:
  - BR2_PACKAGE_HOST_NODEJS [=y] && BR2_HOST_GCC_AT_LEAST_7 [=y]

WARNING: unmet direct dependencies detected for BR2_PACKAGE_HOST_QEMU_LINUX_USER_MODE
  Depends on [n]: BR2_PACKAGE_HOST_QEMU [=y] && BR2_PACKAGE_HOST_QEMU_USER_ARCH_SUPPORTS [=n]
  Selected by [y]:
  - BR2_PACKAGE_HOST_NODEJS [=y] && BR2_HOST_GCC_AT_LEAST_7 [=y]

Fixes:
 - http://autobuild.buildroot.org/results/d78f660ca4a609a0a072b3f2e04d456bf8cf663f

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/nodejs/Config.in.host

@@ -1,6 +1,7 @@
 config BR2_PACKAGE_HOST_NODEJS
 	bool "host nodejs"
-	depends on BR2_HOST_GCC_AT_LEAST_7
+	depends on BR2_PACKAGE_HOST_QEMU_USER_ARCH_SUPPORTS
+	depends on BR2_HOST_GCC_AT_LEAST_8
 	select BR2_PACKAGE_HOST_PYTHON3
 	select BR2_PACKAGE_HOST_PYTHON3_BZIP2
 	select BR2_PACKAGE_HOST_PYTHON3_SSL
@@ -11,3 +12,7 @@ config BR2_PACKAGE_HOST_NODEJS
 	  V8.
 
 	  http://nodejs.org/
+
+comment "host nodejs needs a host gcc >= 8"
+	depends on BR2_PACKAGE_HOST_QEMU_USER_ARCH_SUPPORTS
+	depends on !BR2_HOST_GCC_AT_LEAST_8