sbi: mpxy: define INVALID_ADDR using unsigned long width

INVALID_ADDR is used as an all-ones physical address sentinel.
Using -1U only guarantees 32-bit width, so on platforms where
unsigned long is wider it may not expand to all ones after assignment.

Use -1UL so the conversion to unsigned long preserves an all-ones
bit pattern across supported widths.

Fixes: 7939bf1329eb ("lib: sbi: Add SBI Message Proxy (MPXY) framework")
Signed-off-by: Himanshu Chauhan <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Anup Patel <[email protected]>

0 files changed, 0 insertions, 0 deletions