dpdk: Revert "call the meson-based build instead of Makefiles"

This reverts commit 73903d7e8a6141237637b2011386c7ee6ac969ee.

After discussion with Damjan, the change is more risky than it seemed,
so revert.

Type: fix
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
Change-Id: Idee82806cd4a12a92540f904397d259b531770d1
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>

build/external/patches/dpdk_20.08/0002-build-system-selective-libs.patch

@@ -1,88 +0,0 @@
-diff --git a/app/meson.build b/app/meson.build
-index eb74f215a..93affefa3 100644
---- a/app/meson.build
-+++ b/app/meson.build
-@@ -42,7 +42,17 @@ foreach app:apps
- 
- 	subdir(name)
- 
--	if build
-+	foreach d:deps
-+		if dpdk_libs_disabled.contains(d)
-+			build = false
-+			reason = 'missing dependency, "@0@" '.format (d)
-+		endif
-+	endforeach
-+
-+	if not build
-+		dpdk_apps_disabled += name
-+		set_variable(name.underscorify() + '_disable_reason', reason)
-+	else
- 		dep_objs = []
- 		foreach d:deps
- 			dep_objs += get_variable(get_option('default_library')
-diff --git a/lib/meson.build b/lib/meson.build
-index 3852c0156..76996544d 100644
---- a/lib/meson.build
-+++ b/lib/meson.build
-@@ -44,6 +44,8 @@ if is_windows
- 	] # only supported libraries for windows
- endif
- 
-+disabled_libs = get_option('disable_libs').split(',')
-+
- default_cflags = machine_args
- default_cflags += ['-DALLOW_EXPERIMENTAL_API']
- default_cflags += ['-DALLOW_INTERNAL_API']
-@@ -78,6 +80,11 @@ foreach l:libraries
- 	dir_name = 'librte_' + l
- 	subdir(dir_name)
- 
-+	if disabled_libs.contains(l)
-+		build = false
-+		reason = 'Explicitly disabled via build config'
-+	endif
-+
- 	if build
- 		shared_deps = ext_deps
- 		static_deps = ext_deps
-diff --git a/meson.build b/meson.build
-index 61d9a4f5f..cf04f0e0e 100644
---- a/meson.build
-+++ b/meson.build
-@@ -21,6 +21,7 @@ dpdk_drivers = []
- dpdk_extra_ldflags = []
- dpdk_libs_disabled = []
- dpdk_drvs_disabled = []
-+dpdk_apps_disabled = []
- abi_version_file = files('ABI_VERSION')
- 
- if host_machine.cpu_family().startswith('x86')
-@@ -106,6 +107,14 @@ foreach class:dpdk_driver_classes
- endforeach
- message(output_message + '\n')
- 
-+output_message = '\n===============\nApplications Disabled\n===============\n'
-+foreach app:dpdk_apps_disabled
-+	reason = get_variable(app.underscorify() + '_disable_reason')
-+	output_message += app + ':\t' + reason + '\n\t'
-+endforeach
-+
-+message(output_message + '\n')
-+
- output_message = '\n=================\nContent Skipped\n=================\n'
- output_message += '\nlibs:\n\t'
- foreach lib:dpdk_libs_disabled
-diff --git a/meson_options.txt b/meson_options.txt
-index 9bf18ab6b..d1aa46b8d 100644
---- a/meson_options.txt
-+++ b/meson_options.txt
-@@ -4,6 +4,8 @@ option('armv8_crypto_dir', type: 'string', value: '',
- 	description: 'path to the armv8_crypto library installation directory')
- option('disable_drivers', type: 'string', value: '',
- 	description: 'Comma-separated list of drivers to explicitly disable.')
-+option('disable_libs', type: 'string', value: '',
-+	description: 'Comma-separated list of libs to explicitly disable.')
- option('drivers_install_subdir', type: 'string', value: 'dpdk/pmds-<VERSION>',
- 	description: 'Subdirectory of libdir where to install PMDs. Defaults to using a versioned subdirectory.')
- option('enable_docs', type: 'boolean', value: false,