ANDROID: GKI: remove ANDROID_KABI_DECLONLY from dma-buf.c

In commit 1d3cdeb4 ("ANDROID: GKI: dma-buf: add vendor hook for
dma_buf_release"), ANDROID_KABI_DECLONLY() was used to protect the CRC
values from changing.  As this is the kmi-break point in time, that can
now be removed.

Bug: 438090847
Cc: Gaofeng Sheng <gaofeng.sheng@unisoc.com>
Change-Id: I6cd24e899e1b6327efeb75817ebc9afafb1baacc
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>