hw/arm/aspeed: Move ASPEED_RAM_SIZE() macro to common header for reuse

Moving it into aspeed.h allows all Aspeed machine source files
(AST2400, AST2500, AST2600, AST2700, etc.) to reuse the same macro
definition for consistent behavior and maintainability.

No functional changes.

Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20251104031325.146374-18-jamin_lin@aspeedtech.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
2 files changed