package/onevpl-intel-gpu: add missing dependency on BR2_x86_64

BR2_PACKAGE_ONEVPL_INTEL_GPU selects BR2_PACKAGE_INTEL_MEDIADRIVER,
but it forgets to replicate all its dependencies, in particular
BR2_x86_64, causing:

WARNING: unmet direct dependencies detected for BR2_PACKAGE_INTEL_MEDIADRIVER
  Depends on [n]: BR2_x86_64 [=n] && !BR2_STATIC_LIBS [=n] && BR2_INSTALL_LIBSTDCPP [=y] && BR2_TOOLCHAIN_GCC_AT_LEAST_8 [=y] && BR2_TOOLCHAIN_HAS_SYNC_1 [=y] && BR2_TOOLCHAIN_HAS_THREADS [=y] && BR2_TOOLCHAIN_HAS_THREADS_NPTL [=y]
  Selected by [y]:
  - BR2_PACKAGE_ONEVPL_INTEL_GPU [=y] && BR2_PACKAGE_ONEVPL_ARCH_SUPPORTS [=y] && BR2_INSTALL_LIBSTDCPP [=y] && !BR2_STATIC_LIBS [=n] && BR2_TOOLCHAIN_GCC_AT_LEAST_7 [=y] && BR2_TOOLCHAIN_HAS_SYNC_1 [=y] && BR2_TOOLCHAIN_HAS_THREADS [=y] && BR2_TOOLCHAIN_HAS_THREADS_NPTL [=y]

Fixes: ac65841defece904e91afe1fb51419084c993dba ("package/onevpl-intel-gpu: new package")
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 120f961fc6d4a8902487f17a13646be60f6f7ce1)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/onevpl-intel-gpu/Config.in

@@ -1,5 +1,6 @@
 config BR2_PACKAGE_ONEVPL_INTEL_GPU
 	bool "onevpl-intel-gpu"
+	depends on BR2_x86_64 # intel-mediadriver
 	depends on BR2_PACKAGE_ONEVPL_ARCH_SUPPORTS # onevpl
 	depends on BR2_INSTALL_LIBSTDCPP # onevpl
 	depends on !BR2_STATIC_LIBS # onevpl
@@ -17,6 +18,7 @@ config BR2_PACKAGE_ONEVPL_INTEL_GPU
 	  https://github.com/oneapi-src/oneVPL-intel-gpu
 
 comment "onevpl-intel-gpu needs a toolchain w/ dynamic library, gcc >= 7, C++, NPTL"
+	depends on BR2_x86_64
 	depends on BR2_PACKAGE_ONEVPL_ARCH_SUPPORTS
 	depends on BR2_TOOLCHAIN_HAS_SYNC_1
 	depends on BR2_STATIC_LIBS || !BR2_TOOLCHAIN_GCC_AT_LEAST_7 || \