Update SPIF BD to latest

Offir Kochalsky · Offir Kochalsky · commit b2855e6c6013 · 2018-08-22T15:55:38.000+03:00
diff --git a/spif-driver.lib b/spif-driver.lib
@@ -1 +1 @@
-https://github.com/ARMmbed/spif-driver/#662c4a64af58296aa18a28ba7186d2b81386d85b
+https://github.com/ARMmbed/spif-driver/#2fc4f8e5395cda750484a7a59db95544a2e85bf8

Original file line number	Diff line number	Diff line change
`@@ -1 +1 @@`
`1`		`-https://github.com/ARMmbed/spif-driver/#662c4a64af58296aa18a28ba7186d2b81386d85b`
	`1`	`+https://github.com/ARMmbed/spif-driver/#2fc4f8e5395cda750484a7a59db95544a2e85bf8`