debug/gdb: add gdb 7.5.1 and gdb 7.6.1

debug/gdb: add gdb 7.5.1 and gdb 7.6.1

add gdb version 7.5.1 and gdb version 7.6.1

Signed-off-by: "Daniel Zimmermann" <netzimme@gmail.com>
Message-Id: <2fc4afda19bca864dd9c.1384600083@haus-VirtualBox>
Patchwork-Id: 291762
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>

 # m68k specific configuration file

 ## select ARCH_SUPPORTS_32

 ## select ARCH_DEFAULT_32

 ## select ARCH_DEFAULT_BE

 ## select ARCH_SUPPORTS_WITH_CPU

 ##

 ## help The m68k architecture