Vlv2TbltDevicePkg: Amend the build script
Vlv2TbltDevicePkg: Amend the build script

Take the gcc version detection from OvmfPkg/build.sh instead of the
hardcoded GCC46.

Cc: David Wei <b5f26b2a2cdf37ab487a7004176f1783629975b0@intel.com>
Cc: "Wu, Hao A" <f387b71200577e27ccf5abb090fda0ddd187ec6e@intel.com>
Cc: "Lu, ShifeiX A" <a4695452cea667bd7d616afa73726c21af252369@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Gary Lin <a057d4b27e9e9055b973f54b519db54c22ed5ee8@suse.com>
Reviewed-by: David Wei <b5f26b2a2cdf37ab487a7004176f1783629975b0@intel.com>

MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2