fsl: usb: make errata function common for PPC and ARM

This patch does the following things:
1. Makes the errata checking code common for PPC and ARM
2. Moves all these static inline functions into a dedicated C file

Signed-off-by: Sriram Dash <sriram.dash@nxp.com>
Signed-off-by: Rajesh Bhagat <rajesh.bhagat@nxp.com>
diff --git a/drivers/usb/common/Makefile b/drivers/usb/common/Makefile
index 2f46d38..aee7e32 100644
--- a/drivers/usb/common/Makefile
+++ b/drivers/usb/common/Makefile
@@ -4,5 +4,5 @@
 #
 
 obj-$(CONFIG_DM_USB) += common.o
-obj-$(CONFIG_USB_EHCI_FSL) += fsl-dt-fixup.o
-obj-$(CONFIG_USB_XHCI_FSL) += fsl-dt-fixup.o
+obj-$(CONFIG_USB_EHCI_FSL) += fsl-dt-fixup.o fsl-errata.o
+obj-$(CONFIG_USB_XHCI_FSL) += fsl-dt-fixup.o fsl-errata.o