plugins/core: make a single build unit

Trim through the includes and remove everything not needed for the
core. Only include tcg-op-common.h to remove the need to
TARGET_LONG_BITS and move the build unit into the common set.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20250304222439.2035603-31-alex.bennee@linaro.org>
2 files changed