fsp-sensor: Remove allocation of array storing RIDs on the stack
fsp-sensor: Remove allocation of array storing RIDs on the stack

Dynamically allocate the 'prids' buffer to store the rid values
of an FRC/sensor.

Signed-off-by: Neelesh Gupta <0c847490c0192d1430997c36c35afbb478c33ca8@linux.vnet.ibm.com>
Acked-by: Stewart Smith <ec31ab75ddf977353c8f660f92ea8b23f64aef25@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <a7089bb6e7e92505d88aaff006cbdd60cc9120b6@kernel.crashing.org>

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