In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.
Addresses-Coverity-ID: 
1260018
Addresses-Coverity-ID: 
1260019
Addresses-Coverity-ID: 
1260022
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
                switch (min_t(u8, *hdr, 25)) {
                case 25:
                        p->timing_10_24  = nvbios_rd08(bios, data + 0x18);
+                       /* fall through */
                case 24:
                case 23:
                case 22:
                        p->timing_10_21  = nvbios_rd08(bios, data + 0x15);
+                       /* fall through */
                case 21:
                        p->timing_10_20  = nvbios_rd08(bios, data + 0x14);
+                       /* fall through */
                case 20:
                        p->timing_10_CWL = nvbios_rd08(bios, data + 0x13);
+                       /* fall through */
                case 19:
                        p->timing_10_18  = nvbios_rd08(bios, data + 0x12);
+                       /* fall through */
                case 18:
                case 17:
                        p->timing_10_16  = nvbios_rd08(bios, data + 0x10);