[PATCH] powerpc: fix the allyesconfig build

[Jakub Kicinski]

On Sat, 28 Nov 2020 12:28:19 +1100 Stephen Rothwell wrote:
> There are 2 drivers that have arrays of packed structures that contain
> pointers that end up at unaligned offsets.  These produce warnings in
> the PowerPC allyesconfig build like this:
> 
> WARNING: 148 bad relocations
> c00000000e56510b R_PPC64_UADDR64   .rodata+0x0000000001c72378
> c00000000e565126 R_PPC64_UADDR64   .rodata+0x0000000001c723c0
> 
> They are not drivers that are used on PowerPC (I assume), so mark them
> to not be built on PPC64 when CONFIG_RELOCATABLE is enabled.

😳😳

What's the offending structure in hisilicon? I'd rather have a look
packing structs with pointers in 'em sounds questionable.

I only see these two:

$ git grep packed drivers/net/ethernet/hisilicon/
drivers/net/ethernet/hisilicon/hns/hnae.h:struct __packed hnae_desc {
drivers/net/ethernet/hisilicon/hns3/hns3_enet.h:struct __packed hns3_desc {