Fix pflash PNOR access

pflash changes:

  Move to latest upstream release of skiboot which includes the mtd erase
  patch we were carrying. Adds a patch to fix parsing of the longer mtd
  labels we have since updating the device tree bindings.

    dev:    size   erasesize  name
    mtd0: 00060000 00001000 "u-boot"
    mtd1: 00020000 00001000 "u-boot-env"
    mtd2: 00280000 00001000 "kernel"
    mtd3: 001c0000 00001000 "initramfs"
    mtd4: 01740000 00001000 "rofs"
    mtd5: 00400000 00001000 "rwfs"
    mtd6: 02000000 00001000 "1e620000.flash-controller:flash@1"
    mtd7: 08000000 00001000 "1e630000.flash-controller:pnor@0"

Linux kernel changes:

 Three of the patches move the comaptible string for the bt interface to match
 what we have sent upstream. There is also a dts change to the mtd nodes that
 add back the 'pnor' label to the PNOR mtd device, as required by pflash.

  Cédric Le Goater (2):
    ipmi/bt-bmc: change compatible node to 'aspeed, ast2400-ibt-bmc'
    ARM: dts: aspeed: fix flash module device nodes

  Joel Stanley (2):
    ipmi/bt-bmc: Add comaptible node for ast2500
    arm: dts: aspeed: Use upstream comaptible string

Fixes openbmc/openbmc#785

Change-Id: If2c293b85075edcf3078ef599e7b61f3a6d77c66
Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/meta-openbmc-machines/meta-openpower/common/recipes-bsp/skiboot/skiboot.inc b/meta-openbmc-machines/meta-openpower/common/recipes-bsp/skiboot/skiboot.inc
index fa30f09..702d865 100644
--- a/meta-openbmc-machines/meta-openpower/common/recipes-bsp/skiboot/skiboot.inc
+++ b/meta-openbmc-machines/meta-openpower/common/recipes-bsp/skiboot/skiboot.inc
@@ -3,14 +3,14 @@
 
 SRC_URI += "git://github.com/open-power/skiboot.git;nobranch=1"
 SRC_URI += "file://0001-external-Use-more-standard-PREFIX-vs-prefix.patch"
-SRC_URI += "file://0002-external-common-Teach-ARM-code-to-erase-mtd-chips.patch"
+SRC_URI += "file://0002-arch_flash_arm-Don-t-assume-mtd-partitions-are-short.patch"
 
 FILESEXTRAPATHS_append := "${THISDIR}/skiboot:"
 
 LIC_FILES_CHKSUM = "file://${S}/LICENCE;md5=3b83ef96387f14655fc854ddc3c6bd57"
 
-SRCREV = "skiboot-5.4.0-rc3"
-PV = "5.4.0-rc3"
+SRCREV = "skiboot-5.4.0"
+PV = "5.4.0"
 
 S = "${WORKDIR}/git"