package/gdb: enable host-gdb and gdbserver support for or1k with gdb 12.1

The gdbserver support for or1k is available since 12.1 release, since
commit [1]. Restrict the gdb version choice for or1k to 12.1 for
simplicity. Also enable host-gdb to connect to the gdbserver on the
target.

[1] https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff;h=4933265c3f71b9134363d0c05f09542d5cc677f4

Signed-off-by: Romain Naour <romain.naour@gmail.com>
Cc: Stafford Horne <shorne@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/gdb/Config.in

@@ -17,8 +17,6 @@ config BR2_PACKAGE_GDB
 	depends on BR2_PACKAGE_GDB_ARCH_SUPPORTS
 	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
 	depends on BR2_INSTALL_LIBSTDCPP
-	# no gdbserver on or1k
-	select BR2_PACKAGE_GDB_DEBUGGER if BR2_or1k
 	# When the external toolchain gdbserver is copied to the
 	# target, we don't allow building a separate gdbserver. The
 	# one from the external toolchain should be used.
@@ -45,7 +43,6 @@ if BR2_PACKAGE_GDB
 config BR2_PACKAGE_GDB_SERVER
 	bool "gdbserver"
 	depends on !BR2_TOOLCHAIN_EXTERNAL_GDB_SERVER_COPY
-	depends on !BR2_or1k
 	help
 	  Build the gdbserver stub to run on the target.
 	  A full gdb is needed to debug the progam.

package/gdb/Config.in.host

@@ -3,7 +3,6 @@ config BR2_PACKAGE_HOST_GDB_ARCH_SUPPORTS
 	default y
 	depends on !((BR2_arm || BR2_armeb) && BR2_BINFMT_FLAT)
 	depends on !BR2_microblaze
-	depends on !BR2_or1k
 
 comment "Host GDB Options"
 	depends on !BR2_TOOLCHAIN_EXTERNAL_GDB_SERVER_COPY
@@ -49,9 +48,13 @@ choice
 
 config BR2_GDB_VERSION_10
 	bool "gdb 10.x"
+	# gdbserver support missing
+	depends on !BR2_or1k
 
 config BR2_GDB_VERSION_11
 	bool "gdb 11.x"
+	# gdbserver support missing
+	depends on !BR2_or1k
 
 config BR2_GDB_VERSION_12
 	bool "gdb 12.x"
@@ -65,6 +68,6 @@ config BR2_GDB_VERSION
 	string
 	default "arc-2020.09-release-gdb" if BR2_arc
 	default "10.2"	   if BR2_GDB_VERSION_10
-	default "11.2"     if BR2_GDB_VERSION_11 || !BR2_PACKAGE_HOST_GDB
-	default "12.1"     if BR2_GDB_VERSION_12
+	default "11.2"     if BR2_GDB_VERSION_11 || (!BR2_PACKAGE_HOST_GDB && !BR2_or1k)
+	default "12.1"     if BR2_GDB_VERSION_12 || (!BR2_PACKAGE_HOST_GDB && BR2_or1k)
 	depends on BR2_PACKAGE_GDB || BR2_PACKAGE_HOST_GDB