uqmi: Add support for QMI-based mobile broadband modems

Many of the 4G/LTE and 3G modems utilize the QMI-protocol to control the
modem. At the moment there is no support for them in OpenWrt. This
patch adds support for them in the form of a netifd script and a
control utility. Tested with Huawei E398 and ZTE MF820D (which requires
a delay of ~30 s before responding to QMI commands). I put myself up as
the maintainer, feel free to change this if you desire.

Signed-off-by: Matti Laakso <malaakso@elisanet.fi>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@40868 3c298f89-4303-0410-b956-a3cf2f4a3e73
ubox: update to latest version, fixes kmodloader issues with musl

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@40869 3c298f89-4303-0410-b956-a3cf2f4a3e73
gcc: disable libsanitzier off_t check to fix musl build

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@40870 3c298f89-4303-0410-b956-a3cf2f4a3e73
kirkwood: add support for Linksys EA4500

Support is added only for kernel 3.14 - do not show it until
the switch is made.

Following uboot env changes are needed to make it work on stock uboot:

---
setenv owrt_bootargs_root ubi.mtd=3 root=ubi0:rootfs rootfstype=ubifs rw
setenv owrt_mtdparts mtdparts=orion_nand:0x80000@0x0(uboot),0x20000@0x80000(uboot_env),0x200000@0x200000(kernel),-@0x400000(root)
setenv owrt_boot nand read.e \${loadaddr} 0x200000 0x200000 \; setenv bootargs \$(console) \$(owrt_mtdparts) \${owrt_bootargs_root} \; bootm \${loadaddr}
setenv bootcmd run owrt_boot
saveenv
---

Signed-off-by: Luka Perkov <luka@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@40871 3c298f89-4303-0410-b956-a3cf2f4a3e73
[package] uboot-envtools: add support for kirkwood ea4500

Signed-off-by: Luka Perkov <luka@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@40872 3c298f89-4303-0410-b956-a3cf2f4a3e73
kirkwood: cosmetic: move POGOE02 profile to different file

Signed-off-by: Luka Perkov <luka@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@40873 3c298f89-4303-0410-b956-a3cf2f4a3e73
gcc: define USE_PT_GNU_EH_FRAME for musl as well, reduces binary object size

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@40874 3c298f89-4303-0410-b956-a3cf2f4a3e73
musl: add a hack to rip out excessive iconv bloat

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@40875 3c298f89-4303-0410-b956-a3cf2f4a3e73