meta/scripts: Various getVar/getVarFlag expansion parameter fixes

There were a few straggling expansion parameter removals left for
getVar/getVarFlag where the odd whitespace meant they were missed
on previous passes. There were also some plain broken ussages such
as:

d.getVar('ALTERNATIVE_TARGET', old_name, True)
path = d.getVar('PATH', d, True)
d.getVar('IMAGE_ROOTFS', 'True')

which I've corrected (they happend to work by luck).

(From OE-Core rev: 688f7a64917a5ce5cbe12f8e5da4d47e265d240f)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/kernel-yocto.bbclass

@@ -286,7 +286,7 @@ python do_kernel_configcheck() {
     # if KMETA isn't set globally by a recipe using this routine, we need to
     # set the default to 'meta'. Otherwise, kconf_check is not passed a valid
     # meta-series for processing
-    kmeta = d.getVar( "KMETA", True ) or "meta"
+    kmeta = d.getVar("KMETA") or "meta"
     if not os.path.exists(kmeta):
         kmeta = "." + kmeta
 
@@ -298,8 +298,8 @@ python do_kernel_configcheck() {
     cmd = d.expand("cd ${S}; kconf_check --report -o ${S}/%s/cfg/ ${B}/.config ${S} %s" % (kmeta,configs))
     ret, result = oe.utils.getstatusoutput("%s%s" % (pathprefix, cmd))
 
-    config_check_visibility = int(d.getVar( "KCONF_AUDIT_LEVEL", True ) or 0)
-    bsp_check_visibility = int(d.getVar( "KCONF_BSP_AUDIT_LEVEL", True ) or 0)
+    config_check_visibility = int(d.getVar("KCONF_AUDIT_LEVEL") or 0)
+    bsp_check_visibility = int(d.getVar("KCONF_BSP_AUDIT_LEVEL") or 0)
 
     # if config check visibility is non-zero, report dropped configuration values
     mismatch_file = d.expand("${S}/%s/cfg/mismatch.txt" % kmeta)