attn: Remove generate_hex_word macro
attn: Remove generate_hex_word macro

Remove generate_hex_word macro and do the masking inline.
This is just a code cleanup.

Signed-off-by: Aruna Balakrishnaiah <ab969200bf8a209ae3a660c857a29117d9771707@linux.vnet.ibm.com>
Acked-by: Stewart Smith <ec31ab75ddf977353c8f660f92ea8b23f64aef25@linux.vnet.ibm.com>
Reviewed-by: Vasant Hegde <a6d753843573f7bfed5075c1e875b0be8007a0ab@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <ec31ab75ddf977353c8f660f92ea8b23f64aef25@linux.vnet.ibm.com>

qemu/skiboot,cyrilbur-ibm/skiboot,apopple/skiboot,mikey/skiboot,qemu/skiboot,open-power/skiboot,shenki/skiboot,qemu/skiboot,jk-ozlabs/skiboot,stewart-ibm/skiboot,qemu/skiboot,ddstreet/skiboot,qemu/skiboot,csmart/skiboot,cyrilbur-ibm/skiboot,stewart-ibm/skiboot,ddstreet/skiboot,legoater/skiboot,stewart-ibm/skiboot,shenki/skiboot,mikey/skiboot,mikey/skiboot,cyrilbur-ibm/skiboot,open-power/skiboot,apopple/skiboot,apopple/skiboot,shenki/skiboot,legoater/skiboot,shenki/skiboot,open-power/skiboot,shenki/skiboot,csmart/skiboot,neelegup/skiboot,ddstreet/skiboot,neelegup/skiboot,neelegup/skiboot,legoater/skiboot,jk-ozlabs/skiboot,jk-ozlabs/skiboot,legoater/skiboot,open-power/skiboot,legoater/skiboot,csmart/skiboot,open-power/skiboot